| pig chromosome aberrations after vaccination against classical swine fever in field trials. | chromosomal aberrations were observed after vaccination against classical swine fever (csf) in a previous study done on experimental pigs. to determine if the same effect occurs in farm animals, field trials were done with immunized pigs. the cytogenetic analysis was made from lymphocyte cultures of pigs sampled in three farms of río cuarto region on six different periods: one, pre-vaccination (control) and in five post-vaccination (days 3, 7, 10, 15 and 22). vaccine inoculation induced signific ... | 2002 | 12126897 |