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Author Archives: kaggen
Clostridium botulinum – new scanning electron micrographs
Many bacteria produce so-called exotoxins. Some of nature’s most potent toxins are found among these. The lethal dose for humans of e.g. the botulinum toxin is only 1-2 ng (1 ng = 0.000 000 001 g) per kg body weight … Continue reading
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Welcome to a lecture on VetBact at SVA on February 12, 2013
VetBact is a database containing information about 215 bacterial species of interest in veterinary medicine. On February 12, Kaggen (Karl-Erik Johansson) and Staffan Tamm will present VetBact in “Långskeppet”, SVA at 14:00 to 14:45, for the staff of SVA. The … Continue reading
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Trueperella pyogenes – new name of an earlier described bacterium
A new name has again been proposed for the bacterium known as Arcanobacterium pyogenes. This bacterium has also been referred to as Corynebacterium pyogenes and Actinomyces pyogenes. The proposed new name is Trueperella pyogenes and the reason for introducing this … Continue reading
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Streptococcus uberis on SELMA and SELMA Plus plates – new images
In Sweden, the proportion of S. uberis induced acute clinical mastitis constituted 11% over the past 10 years. SELMA and SELMA Plus plates are used for cultivation of milk samples from suspected mastitis cases. It is often possible to make … Continue reading
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Bordetella bronchiseptica – new images
Bordetella bronchiseptica is an impotant bacterium in veterinary medicine. This bacterium cause primary and secondary airway infections in dogs and pigs. The old images on the bacterial page of B. bronchiseptica have been replaced by images of higher quality … Continue reading
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Comments on VetBactLab in Swedish
Tack vare uppmärksamma veterinärstudenter på baktkursen har vi nu kunnat rätta till ett par felaktigheter och en tvetydighet förklaras i sista punkten nedan: I verktyget Kolhydratkombination 3 för fall 1 var plus (+) och minus (-) omkastade på kontrollrören. Det … Continue reading
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Welcome to the Bacteriology course, 2012
Kaggen giving a lecture on VetBact, 25 September 2012. Photo: Staffan Tamm/VetBact.org On September 24 the bacteriology course for the veterinary students started. We hope that you will find VetBact useful during your studies and we appreciate all kinds … Continue reading
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Salmonella enterica subsp. enterica and Escherichia coli – new images
Old VetBact images of Salmonella enterica subsp. enterica and Escherichia coli (cultivated on bovine blood agar) have now been replaced with images of improved quality. Images of S. enterica and E. coli cultivated on purple agar and on special media … Continue reading
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New field heading in VetBact
To avoid getting too many images under the heading “Macromorphology” in VetBact, we have introduced the new heading “Special media” (see e.g. Escherichia coli). Our intention is to use this new heading for images of bacterial colonies cultivated on special … Continue reading
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More than 300 images at VetBact
Over 300 pictures are included in VetBact (you can see thumb nail images of most of them by chosing Images on the start page). In connection with the latest course in Bacteriology for veterinary students (sep-oct 2011), several new pictures … Continue reading
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