| isolation and characterisation of intestinal spirochaetes. | faeces or rectal swabs from 1527 subjects were examined for the presence of intestinal spirochaetes by anaerobic culture on blood agar incorporating spectinomycin (400 mg/l). twenty three specimens (1.5%) were positive, and only one of these came from a patient with diarrhoea. all positive specimens came from either asians or known homosexuals. comparative tests showed a close phenotypic similarity between the human isolates and non-pathogenic porcine intestinal spirochaetes. these organisms dif ... | 1986 | 3722407 |