Organisms the energy of which is derived from the reduction of sulphur or oxidation of thiosulphates, the metabolic end- products...

Synthesized chemotherapeutic substances derived from sulphanilamide (p-aminobenzenesulphonamide) available in a number of forms for parenteral or (commonly) oral dosage. Sulphonamides...

Culture media to which are added single carbohydrates, alcohols etc., the bacteriological fermentation of which yields acid and possibly gas,...

Cultures made by transference of organisms from an existing culture to fresh media, to obtain pure cultures from a mixed...

Family within the order Actinomycetales, and consisting of branching filaments growing as a mycelium, with conidia borne on aerial hyphae...

Two exotoxic substances produced by some streptococci (particularly Group A). Streptolysin ‘O’ is oxygen-labile and produced in serum-free broth; streptolysin...

Lancefield Group C type infecting animals other than bovines.  

α-haemolytic streptococcus, frequently commensal in man, but associated with infections, especially endocarditis.  

Species associated with pneumonia and other pyogenic infections, Streptococcus pneumoniae appears in fresh material as a pair of oval cocci...

Group D faecal or vaginal streptococcus differentiated from Streptococcus faecalis by lack of sorbitol fermentation.