Anti-Streptococcus agalactiae antibody [504.5] (ab41203)


  • Product nameAnti-Streptococcus agalactiae antibody [504.5]
    See all Streptococcus agalactiae primary antibodies
  • Description
    Mouse monoclonal [504.5] to Streptococcus agalactiae
  • SpecificityThis antibody cross-reacts weakly with Strep. dysgalactiae. Does not cross-react with Strep. uberis, Strep. bovis, Strep. faecalis, Staph. aureus, Mycoplasma bovis, Mycoplasma californicum, Mycoplasma bovigenitalium, E. coli or Corynebacterium bovis.
  • Tested applicationsSuitable for: ELISAmore details
  • Species reactivity
    Strep. agalactiae, Strep. dysgalactiae.
  • Immunogen

    UV-inactivated Strep. agalactiae cells isolated from mastitic milk.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Storage bufferPreservative: None
    Constituents: PBS, pH 7.4
  • Concentration information loading...
  • PurityIgG fraction
  • Purification notesPurified by PEG precipitation.
  • ClonalityMonoclonal
  • Clone number504.5
  • IsotypeIgM
  • Research areas


Our Abpromise guarantee covers the use of ab41203 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
  • Application notesELISA: 1/1,024,00.
    ELISA is an indirect assay against Strep. agalactiae cells on the solid phase. Titers represent endpoint dilutions that achieve absorbance values > 0.1.

    Not yet tested in other applications.
    Optimal dilutions/concentrations should be determined by the end user.
  • Target

    • RelevanceOnce thought to infect only cows, where it produces mastitis, Streptococcus agalactiae is now known to be able to cause serious disease, bacteremia and meningitis, in immunocompromised individuals and in neonates. Infections in the newborn are the most common and are extremely serious. They are of two types. Early onset of infection, usually occuring within 5 days of birth, is manifested by bacteremia and pneumonia. This infection is contracted vertically, as the baby passes through the birth canal. The other type of infection is a meningitis that occurs between the 10th and 60th days of life. The origin of this infection is not known, but it is not believed to be the mother.

    References for Anti-Streptococcus agalactiae antibody [504.5] (ab41203)

    This product has been referenced in:
    • Pazos-Perez N  et al. Ultrasensitive multiplex optical quantification of bacteria in large samples of biofluids. Sci Rep 6:29014 (2016). Read more (PubMed: 27364357) »

    See 1 Publication for this product

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    Thank you for contacting us.

    I have attached the list of antibodies we have along with details. Please check.

    I am sorry I am unable to confirm the species cross reactivity of the these antibodies other than waht is given on the datas...

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    Thank you for contacting us.

    ab41181 is anti Strep agalactiae, it will weakly cross react with Strep. dysgalactiae.

    ab41203 is anti Strep agalactiae, it will weakly cross react with Strep. dysgalactiae.

    ab19980 is an anti Ent...

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    Thank you for contacting us.

    Please find below the information I managed to collect by contacting the sources of the Anti-Staphylococcus aureusand the Anti-Streptococcus agalactiaeantibodies we have in our catalog :


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    Thank you for contacting us. Monoclonal antibodies ab41181 and ab41203 to Strep. agalactiae were created many years ago by our collaboratorfor use in a diagnostic test of bovine mastitis. The informationwas considered proprietary,so it wasnever publish...

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    Thank you for your enquiry. Although we haven't identified the precise epitopes that are recognized by ab41181 and ab41203, we know that they react with something on the surface of Strep. agalactiae cells. They do not react with serum proteins. I ...

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