| abortion in japanese cows caused by chlamydia psittaci. | an outbreak of abortion in cows occurring in niigata prefecture was shown to be caused by chlamydia psittaci. elementary bodies characteristic of chlamydia were found in the liver of aborted fetuses and c. psittaci antigen was demonstrated by indirect immunofluorescence. chlamydia was isolated from the liver of aborted fetuses by the yolk sac inoculation of developing chick embryos and by the intraperitoneal inoculation of guinea pigs. abortion occurred mostly in middle or late pregnancy. aborte ... | 1991 | 1771749 |