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JPH0361487A - Detection of swine epidemic pneumonia mycoplasma - Google Patents

Detection of swine epidemic pneumonia mycoplasma

Info

Publication number
JPH0361487A
JPH0361487A JP1198475A JP19847589A JPH0361487A JP H0361487 A JPH0361487 A JP H0361487A JP 1198475 A JP1198475 A JP 1198475A JP 19847589 A JP19847589 A JP 19847589A JP H0361487 A JPH0361487 A JP H0361487A
Authority
JP
Japan
Prior art keywords
dna
base sequence
probe
formula
nucleotide base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1198475A
Other languages
Japanese (ja)
Inventor
Satoshi Nunofuji
聡 布藤
Shizuo Mise
三瀬 静男
Yasuhiro Seto
泰裕 瀬戸
Mika Inosawa
猪澤 美香
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIPPN Corp
Original Assignee
Nippon Flour Mills Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Flour Mills Co Ltd filed Critical Nippon Flour Mills Co Ltd
Priority to JP1198475A priority Critical patent/JPH0361487A/en
Publication of JPH0361487A publication Critical patent/JPH0361487A/en
Pending legal-status Critical Current

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  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

PURPOSE:To detect swine epidemic pneumonia mycoplasma by using a DNA having nucleotide base sequence of a specific structural formula as a probe and performing DNA-hybridization. CONSTITUTION:A DNA having nucleotide base sequence selected from group expressed by formula I, formula II, formula III, formula IV or formula V is used as a probe and swine epidemic pneumonia mycoplasma (Mycoplasma hypopneumoniae) is detected by adopting a DNA-hybridization method. Said detecting method of swine epidemic pneumonia mycoplasma using DNA as a probe is able to be performed in a shorter time (about 2 day) in comparison with normal separation detecting method. Furthermore, said method is able to be adopted about the sample of e.g. pituita of infected swine having high viscosity by treating the sample with dithiothreitol, etc.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は豚流行性肺炎原因菌マイコプラズマ・ハイオニ
ュウモニエの検出方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for detecting Mycoplasma hyopneumoniae, a bacterium that causes swine epidemic pneumonia.

〔従来の技術〕[Conventional technology]

豚流行性肺炎(豚マイコプラズマ肺炎Mycoplas
maPneumoniae of 5w1ne+以下r
MPsJという)はマイコプラズマ・ハイオニュウモニ
エ(Mycoplasmahyopneumoniae
) (以下、rM、hpJという)という微生物により
惹起される。本店は慢性経過を取るのが特徴で、死亡率
は低い。しかしながら罹患率は極めて高く、飼料効率の
低下等、養豚産業に与えている経済的損失は美大なもの
となっている。
Porcine epidemic pneumonia (Mycoplas pneumonia)
maPneumoniae of 5w1ne+r below
MPsJ) is Mycoplasma hyopneumoniae.
) (hereinafter referred to as rM, hpJ). The main disease is characterized by a chronic course, and the mortality rate is low. However, the morbidity rate is extremely high, and the economic losses caused to the pig farming industry, such as decreased feed efficiency, are enormous.

農林水産省の調査によると現在日本の層場に出荷される
豚の半数以上が本店による肺病変を有しており、はぼ全
国的に蔓延していることが明らかにされている。
According to a survey by the Ministry of Agriculture, Forestry and Fisheries, more than half of the pigs shipped to Japan's stockyards now have lung lesions caused by this disease, and it has become clear that the disease is widespread nationwide.

MPSの診断法に関しては補体結合反応、BLISA法
等による血清診断法、あるいは肺病変の肉眼所見による
方法が報告されている。また、病巣からM、hpを分離
する方法もあるが、M、hpは栄養要求性が厳しく人工
培地での発育には長期間が必要である。このため、従来
Mp s g染豚からM、hpを分離し同定するまでに
少なくとも2週間から1ケ月程度必要であった。
Regarding diagnostic methods for MPS, a serum diagnostic method using complement fixation reaction, BLISA method, etc., or a method based on macroscopic findings of lung lesions has been reported. There is also a method of separating M and hp from lesions, but M and hp have strict nutritional requirements and require a long period of time to grow in an artificial medium. For this reason, it conventionally required at least two weeks to one month to isolate and identify M and hp from Mpsg-stained pigs.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明の目的は、病巣からM、hpを短期間で検出する
方法を提供することである。
An object of the present invention is to provide a method for detecting M, hp from lesions in a short period of time.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の目的は以下の式(I)、(n)、(I)、(I
V)または(V)で示される塩基配列のヌクレオチド、
これらをその一部として含む組換えDNA。
The object of the present invention is to have the following formulas (I), (n), (I), (I
V) or nucleotides of the base sequence shown by (V),
Recombinant DNA containing these as part of it.

あるいはこれらをその一部として含む合aDNAをDN
Aプローブとして用いたDNAハイブリダイゼーション
法により達成される。
Or DNA containing these as part of DNA
This is achieved by a DNA hybridization method using an A probe.

ししIjLTAALU’1 Ui’ltA’l’AA’1r UTATTTTG(:[’ 以下、本発明の詳細な説明する。Shishi IjLTAALU’1 Ui’ltA’l’AA’1r UTATTTTTG(:[’ The present invention will be explained in detail below.

リボゾームRNA (以下r rRNA」という)は1
菌体当り1万コピー以上存在し、検出感度の面では非常
に有効であると考えられる。しかし、r RN Aは生
物の進化の過程において比較的よく保存されたものの一
つであることから抗原遺伝子と比較して特異性が低い。
Ribosomal RNA (hereinafter referred to as r rRNA) is 1
There are over 10,000 copies per bacterial cell, and it is considered to be very effective in terms of detection sensitivity. However, since rRNA is one of the genes that has been relatively well conserved during the evolution of living organisms, its specificity is lower than that of antigen genes.

たとえば大腸菌、と枯草菌では70=80%相同性があ
ると言われている。
For example, Escherichia coli and Bacillus subtilis are said to have 70=80% homology.

ところでM、hpのrRNAについては、西独のグルー
プが165rRNAの塩基配列を決定している〔C,T
a5chke et al、 Nucl、 Ac1ds
 Re5115、3918(1987) ”Nucle
otide 5equence of the16S 
rRNA of Mycoplasma hyopne
umoniae” :l 。本発明者は、このデータを
用い、現在までにすでに決定されている他種生物の16
SrRNAの塩基配列と比較してM、hp 16S r
RNAに特有な領域を検索した。
By the way, regarding the rRNA of M and hp, a group in West Germany has determined the base sequence of 165 rRNA [C, T
a5chke et al, Nucl, Ac1ds
Re5115, 3918 (1987) “Nucle
otide 5equence of the16S
rRNA of Mycoplasma hyopne
Umoniae": l. Using this data, the present inventors have identified the 16 species of other organisms that have been determined to date.
Compared with the base sequence of SrRNA, M, hp 16S r
We searched for regions unique to RNA.

その結果、M、hpに特異的と考えられる数個の領域を
発見し、その領域からDNAプローブとして有用と考え
られるオリゴヌクレオチドを選定し、これを化学合成し
、DNAプローブとしてIVlhpの検出を行ったとこ
ろ、極めて高感度でM、hpを検出しうろことを見出し
、本発明を完成するに至った。
As a result, we discovered several regions thought to be specific to M, hp, selected oligonucleotides considered to be useful as DNA probes from these regions, chemically synthesized them, and detected IVlhp as DNA probes. As a result, they discovered that scales can detect M and hp with extremely high sensitivity, and have completed the present invention.

(、へ) M、  hp  16 S rRNAにおけ
る特異領域の検索 JOIS−FのGen 13ank及びEMBLDNA
データベースを用い現在までに報告されている各種生物
の163rRNAの塩基配列を検索した。
(, to) M, Search for unique regions in hp 16 S rRNA JOIS-F Gen 13ank and EMBL DNA
Using a database, we searched for 163 rRNA base sequences of various organisms that have been reported to date.

得られた塩基配列すべてと、第1図に示したIvf、h
p  16 S rRNAの塩基配列とを、遺伝子解析
用パソコン・ソフトウェアGENIAS (三井情報開
発)を用いて比較した。
All the obtained base sequences and Ivf, h shown in Figure 1
The base sequence of p 16 S rRNA was compared using computer software for gene analysis GENIAS (Mitsui Knowledge Development).

その結果、第1図において、塩基No、 180〜24
0.590〜680.990−1040の3ケ所がM、
hp特異領域として考えられることがわかった。
As a result, in FIG. 1, base No. 180-24
3 places from 0.590 to 680.990-1040 are M,
It was found that this region can be considered as a hp-specific region.

(B)  オリゴヌクレオチドの合成 法に、DNAプローブとして有用と考えられる、化学合
成すべきオリゴヌクレオチドを、以下の点に注意して決
定した。
(B) Oligonucleotides to be chemically synthesized that are considered useful as DNA probes in the oligonucleotide synthesis method were determined with the following points in mind.

〔1)分子内で高次構造をとらないこと。[1) Do not form a higher-order structure within the molecule.

(2)  16SrRNAの他の領域と相同性をもたな
いこと。
(2) It has no homology with other regions of 16S rRNA.

(3)分子内にくり返し構造をもたないこと。(3) No repeating structure within the molecule.

(4)塩基の組成比が極端にかたよらないこと。(4) The composition ratio of the base should not vary significantly.

このような条件を満たし、DNAプローブとして適当と
考えられる30塩基長のオリゴヌクレオチド2種類(プ
ローブ1及び2)を台底した。プローブ1及び2の塩基
配列は前記式(IV)及び(V)により表わされる。な
お、このオリゴヌクレオチドは16S rRNAの逆相
補鎖である。すなわち、プローブ1はM、hp 165
 rRNAの塩基No、 203〜232、またプロー
ブ2は塩基No、 610〜639の逆相補鎖にあたる
Two types of oligonucleotides (probes 1 and 2) with a length of 30 bases that meet these conditions and are considered suitable as DNA probes were developed. The base sequences of probes 1 and 2 are represented by formulas (IV) and (V) above. Note that this oligonucleotide is a reverse complementary strand of 16S rRNA. That is, probe 1 is M, hp 165
rRNA base numbers 203-232, and probe 2 corresponds to the reverse complementary strand of base numbers 610-639.

(C)”P標識合成オリゴヌクレオチドを用いたDNA
プローブ法によるM、hpの検出合成オリゴヌクレオチ
ドの5′末端を32pで標識し、M、hpのDNAプロ
ーブ法による検出を試みた。
(C) “DNA using P-labeled synthetic oligonucleotide
Detection of M and hp by probe method The 5' end of a synthetic oligonucleotide was labeled with 32p, and detection of M and hp by DNA probe method was attempted.

1) ” P標識合成オリゴヌクレオチドの調製T4ポ
リヌクレオチドキナーゼ及びrr−”Pl ATPを用
い、台底オリゴヌクレオチドの5′末端をリン酸化する
ことにより32pg識を行った。得られたオリゴヌクレ
オチドの比放射活性は約4 X 10’ c、p、m、
/pmoleであった。
1) Preparation of ``P-labeled synthetic oligonucleotide 32pg labeling was performed by phosphorylating the 5' end of the platform oligonucleotide using T4 polynucleotide kinase and rr-''Pl ATP. The specific radioactivity of the obtained oligonucleotide was approximately 4 X 10' c,p,m,
/pmole.

2)DNAプローブ法 上記プローブはrRNAに結合するものであす、シかも
オリゴヌクレオチドプローブであることから、−船釣な
ハイブリダイゼーションの条件ではうまく反応がおこら
ない。
2) DNA probe method Since the above probe binds to rRNA and is also an oligonucleotide probe, the reaction does not occur under harsh hybridization conditions.

そこで培養液の処理法、ハイブリダイゼーションの方法
、メンブレンの選択等、種々の条件検討を行った。
Therefore, we investigated various conditions such as culture solution treatment methods, hybridization methods, and membrane selection.

その結果、次に示すような方法が適当であることが明ら
かとなった。
As a result, it became clear that the following method was appropriate.

被検液100μlに20%ジチオスレイトール又は20
%N−アセチル−L−システィン100μlを加え、3
7℃、30分処理し、溶菌させる。
Add 20% dithiothreitol or 20% dithiothreitol to 100 μl of test solution.
Add 100 μl of %N-acetyl-L-cysteine and
Treat at 7°C for 30 minutes to lyse.

この処理により溶菌のほか、豚の鼻汁等の粘度の高い試
料を低粘度化できる。この試料をメンブレン(ゲルマン
社製バイオトレースRP等)上にスポットする。80℃
で2時間乾燥後、60℃のプレハイブリダイゼーション
溶液(: 5 X5SC(0,15MNaC1,0,0
15Mクエン酸ナトリウム〉、5 xDenhaldt
’ S溶液(0,02%BSA、0.02%ポリビニル
ピロリドン、0.02%フィコール)、0.2%5DS
(ドデシル硫酸ナトリウム)、200μg/ml酵母t
 RN A :]に1時間浸漬する。続いて60℃のハ
イブリダイゼーション溶液〔ブレハイブリダイゼーショ
ン溶液に2 ×10gc、p、m、 710mI!の3
2P標mオリゴヌクレオチドを加えたもの〕に2時間浸
漬する。
In addition to lysing bacteria, this treatment can reduce the viscosity of highly viscous samples such as pig nasal secretions. This sample is spotted onto a membrane (Biotrace RP manufactured by Gelman, etc.). 80℃
After drying for 2 hours at 60 °C, prehybridization solution (: 5
15M Sodium Citrate>, 5 x Denholdt
'S solution (0.02% BSA, 0.02% polyvinylpyrrolidone, 0.02% Ficoll), 0.2% 5DS
(sodium dodecyl sulfate), 200 μg/ml yeast t
Soak in RNA:] for 1 hour. Next, add 60°C hybridization solution [2 x 10gc, p, m, 710mI! No. 3
2P-marked oligonucleotide] for 2 hours.

60℃の5xSSC−0,2%SDS溶液で2分間づつ
、2回洗浄し、風乾後、X線フィルム及び増感スクリー
ンを用いて、−70℃で16時間オートラジオグラフィ
ーを行う。
After washing twice with 5xSSC-0.2% SDS solution at 60°C for 2 minutes each time and air drying, autoradiography is performed at -70°C for 16 hours using an X-ray film and an intensifying screen.

M、hpとM、hr (Mycoplas+na hy
orhinis)を2日間培養したものを原液とし、こ
の原液を試料1、その5.10.50.100及び10
00倍希釈液をそれぞれ試料2.3.4.5及び6とし
、その各100μmについて、上記方法にしたがって、
プローブ1及び2を用いてM、hpの検出を行った。結
果を第2図に示す。(ハ)はプローブ1とプローブ2の
量をそれぞれI X 106c、p、m、/ 10−使
用したときの結果を示す。(イ)、(ロ)、(ハ)いず
れのばあいにも、1000倍希釈液においてM、hpを
検出することができた。M、hpの培養原液の菌数は1
06〜10’ cfu /m1.であリ、したがって1
02〜10’個の菌数で十分検出できることがわかる。
M, hp and M, hr (Mycoplas+na hy
Orhinis) was cultured for 2 days and used as a stock solution, and this stock solution was used as sample 1, sample 5.10.50.
Samples 2, 3, 4, 5 and 6 were prepared using the 00 times diluted solution, and each 100 μm of the solution was prepared according to the above method.
M and hp were detected using probes 1 and 2. The results are shown in Figure 2. (c) shows the results when probe 1 and probe 2 were used in amounts of I x 106c, p, m, /10-, respectively. In all cases (a), (b), and (c), M and hp could be detected in the 1000-fold diluted solution. The number of bacteria in the stock culture solution of M and hp is 1.
06-10'cfu/m1. Therefore, 1
It can be seen that a bacterial count of 02 to 10' can be sufficiently detected.

またM、hpに最も近縁のM、  hrについては培養
原液でも全く反応しなかった。
Furthermore, M and hr, which are most closely related to M and hp, did not react at all even with the stock culture solution.

また2種類のオリゴヌクレオチドは共にM、hpに対す
る特異性があり、両者の混合により、さらに検出感度を
上げることができる。
Furthermore, both of the two types of oligonucleotides have specificity for M and hp, and by mixing the two, detection sensitivity can be further increased.

〔発明の効果〕〔Effect of the invention〕

本発明のDNAをプローブとして用いるM、hpの検出
法は、通常の分離検出法と比較して短時間(約2日)で
行うことができる。さらに、サンプルをジチオスレイト
ール又はN−アセチル−L−ンステイン処理するばあい
には、粘度の高い鼻汁等のサンプルについても適用可能
である。
The method for detecting M and hp using the DNA of the present invention as a probe can be performed in a shorter time (about 2 days) than conventional separation detection methods. Furthermore, when the sample is treated with dithiothreitol or N-acetyl-L-steine, it can also be applied to samples such as highly viscous nasal secretions.

M、hp感染豚の鼻汁には10’ 〜10’ cfu/
−のM、hpが存在すると考えられているので鼻汁試料
を用いてM、hp感染豚の直接診断も可能である。
The nasal secretions of M, hp-infected pigs contain 10' to 10' cfu/
- Since it is thought that M.hp.- is present, it is also possible to directly diagnose M.hp. infected pigs using nasal discharge samples.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、M、hpの16SrRNAの全塩基配列を示
す。 第2図は、 本発明のプローブ1及び2を用いて 行ったM。 hp 検出試験の結果を示す。
FIG. 1 shows the entire base sequence of 16S rRNA of M and hp. FIG. 2 shows M measurements performed using probes 1 and 2 of the present invention. The results of the hp detection test are shown.

Claims (1)

【特許請求の範囲】 (1)下記の式( I )〜(V)からなる群から選ばれ
るヌクレオチド塩基配列を有するDNA。 ( I ) CCCCATTTC^1T^0TGGTGAAGC^2
T^0TGAAGGCTC^3C^0TTTGAATA
A^4A^0AATTCATGC^5A^0AATTT
TTAT^6C^0A(II) CCGCTAACC^1T^0CTTCATAAT^2
T^0CTATTTTGC^3C^0AGTATCTA
A^4A^0GCGGACTAA^5A^0GTTGA
GCTT^6T^0AGCATTTAA^7C^0TT
TAAACTT^8A^0ACAAAAAAC^9C^
0T(III) GTGATCTCG^1T^0TAGCCTCGG^2
C^0TATATCTCT^3A^0TAGTTTTG
C^4G^0AGAATGTCA^5A^0G(IV) CTTGGTGAA^1G^0CTTGAAGGC^2
T^0CCTTTGAAT^3A^0(V) CGGACTAAA^1G^0TTGAGCTTT^2
A^0GCATTTAAC^3^0T(2)請求項(1
)記載のヌクレオチド塩基配列をその一部として含む組
換えDNA。 (3)請求項(1)記載のヌクレオチド塩基配列をその
一部として含む合成DNA。 (4)請求項(1)、(2)、及び(3)のいずれか1
項記載のヌクレオチド塩基配列を含むDNAをプローブ
として用いて、DNAハイブリダイゼーション法により
豚流行性肺炎マイコプラズマ(マイコプラズマ・ハイオ
ニュウモニエ)を検出する方法。
[Scope of Claims] (1) A DNA having a nucleotide base sequence selected from the group consisting of the following formulas (I) to (V). (I) CCCCATTTC^1T^0TGGTGAAGC^2
T^0TGAAGGCTC^3C^0TTTGAATA
A^4A^0AATTCATGC^5A^0AATTT
TTAT^6C^0A(II) CCGCTAACC^1T^0CTTCATAAT^2
T^0CTATTTTGC^3C^0AGTATCTA
A^4A^0GCGGACTAA^5A^0GTTGA
GCTT^6T^0AGCATTTAA^7C^0TT
TAAAACTT^8A^0ACAAAAAAC^9C^
0T(III) GTGATCTCG^1T^0TAGCCTCGG^2
C^0TATATCTCT^3A^0TAGTTTTG
C^4G^0AGAATGTCA^5A^0G(IV) CTTGGTGAA^1G^0CTTGAAGGC^2
T^0CCTTTGAAT^3A^0 (V) CGGACTAAA^1G^0TTGAGCTTT^2
A^0GCATTTAAC^3^0T (2) Claim (1
) A recombinant DNA containing the nucleotide base sequence described in (a) as a part thereof. (3) A synthetic DNA comprising the nucleotide base sequence according to claim (1) as a part thereof. (4) Any one of claims (1), (2), and (3)
A method for detecting Mycoplasma swine epidemic pneumonia (Mycoplasma hyopneumoniae) by a DNA hybridization method using DNA containing the nucleotide base sequence described in Section 1 as a probe.
JP1198475A 1989-07-31 1989-07-31 Detection of swine epidemic pneumonia mycoplasma Pending JPH0361487A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1198475A JPH0361487A (en) 1989-07-31 1989-07-31 Detection of swine epidemic pneumonia mycoplasma

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1198475A JPH0361487A (en) 1989-07-31 1989-07-31 Detection of swine epidemic pneumonia mycoplasma

Publications (1)

Publication Number Publication Date
JPH0361487A true JPH0361487A (en) 1991-03-18

Family

ID=16391728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1198475A Pending JPH0361487A (en) 1989-07-31 1989-07-31 Detection of swine epidemic pneumonia mycoplasma

Country Status (1)

Country Link
JP (1) JPH0361487A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1327070C (en) * 2001-09-18 2007-07-18 福伸工业株式会社 Cloth treatment device
US7361746B2 (en) 1999-12-15 2008-04-22 Gen-Probe Incorporated Methods and compositions for detection of Mycobacterium avium complex species

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7361746B2 (en) 1999-12-15 2008-04-22 Gen-Probe Incorporated Methods and compositions for detection of Mycobacterium avium complex species
CN1327070C (en) * 2001-09-18 2007-07-18 福伸工业株式会社 Cloth treatment device

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