Emil Kucera Oct 1, 2019:

Thank you Jiri, I _was wondering why BK meant MT; now here's also a bit from the web:

Koch's Tubercle Bacillus - a centenary reappraisal. - NCBI
https://www.ncbi.nlm.nih.gov › pubmed
by JM Grange - ‎1982 - ‎Cited by 20 - ‎Related articles
The tubercle bacillus discovered by Robert Koch in 1882 was termed Mycobacterium tuberculosis in 1886.

Regards, Emil

Jiri Lonsky Oct 1, 2019:

BK stands for "Bacillus Kochii".

Emil Kucera Sep 20, 2019:

BK is, in particular, Mycobacterium tuberculosi in one of my list of lab abbreviations, from another manual, no longer referenced, though. Same for BRSK - bronchoscopy