Medical Definition of B haemolysis

1. Complete or "true" haemolysis observed in blood agar cultures of various bacteria, especially haemolytic streptococci and staphylococci; virtually all of the erythrocytes are destroyed in a relatively wide, regularly circumscribed, circular zone about the colony, thereby resulting in a clear "halo" of transparent agar; the zone of haemolysis is frequently much wider than the diameter of the colony; the degree of change varies with species of erythrocytes, e.g., those of sheep and rabbits are usually more easily haemolyzed than those of man, and so on; the haemolysin acts extracellularly (in the absence of the bacterial cells) and may be quantitatively estimated by means of tube-dilution tests of a bacteria-free filtrate (containing the haemolytic substance) with a suspension of erythrocytes. (05 Mar 2000)

Lexicographical Neighbors of B Haemolysis

by the hour
by the piece
by the way
by trial and error
by word of mouth
b and t cell count
B battery
b c1 complex
B cell
B chain
B chromosome
B complex
B fibres
b galactosidase
b haemolysin
b haemolysis (current term)
B horizon
B lymphocyte
B lymphocyte
b phage
B virus
B vitamin
c
C
C-10-deacetylase
C-13-deacylase
C-banding stain
C-clamp
C-horizon
c-Jun amino-terminal kinase

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