Category: M

Statutorily designated (UK) milk test in which 10 ml of milk (from a sample stored overnight at a temperature not above 70°F) must not completely decolorize 1.0 ml of a standardized methylene blue solution with which it is mixed in a 152 x 16 mm (reductase) tube. The tube is incubated for 30 minutes, and…

Micro-organisms growing between approximately 25°and 40°C, in the middle range of temperature.  

Sodium ethylmercurithiosalicylate, which in dilute solution is added as an antiseptic to sera and antitoxins.  

Yeast extract agar for enterococci, selective by the inclusion of thallous acetate. Maroon colonies of enterococci, surrounded by a clear zone, result from the fermentation of sorbitol, reduction of triphenyl tetrazolium chloride, and decomposition of tyrosine.  

A means of preparing streptococci for Lancefield grouping, the organisms being lysed with a culture filtrate of Streptomyces albus.  

American bacteriological filter similar in type to the Berkefeld filters.  

Characterization test of the ability of an enterobacterium to utilize sodium malonate in a buffered yeast extract broth, causing an alkaline (blue) change in bromthymol blue indicator in the medium. Only Klebsiella species and a few of the motile enterobacterial organisms possess this characteristic.  

This genus (Gram-negative rods associated with glanders in horses and other animals) has now been abandoned, and its members allocated to the Acinetobacter or Pseudomonas genera.  

Extract of Acinetobacter mallei, used for skin tests on horses, in the manner of the Mantoux tuberculin test.  

Pertaining to a governmental unit. While “municipal” is commonly used to refer to a local governmental unit, such as a city or town, it can also be used in a broad sense to refer to the internal affairs of a state, nation, or people.