| haemoparasite infections in newly introduced dairy cattle in loei province, thailand: trypanosoma evansi antigen levels by elisa referring to abortion. | an antigen-detection enzyme-linked immunosorbent assay (ag-elisa) based on affinity-purified polyclonal antibody was utilised as an immunodiagnosis for trypanosoma evansi infections in cattle. five hundred pregnant heifers were introduced in loei province, thailand and a total of 271 samples were collected at 37 farms during four visits over a year commencing a month after the introduction. each time the haematocrit centrifuge technique (hct) was carried out as a field diagnosis for t. evansi, a ... | 1998 | 9870362 |