| anaplasma marginale infection in a japanese black cow 13 years after eradication of rhipicephalus (boophilus) microplus in okinawa, japan. | in october 2007, a 15-year-old japanese black cow on ishigaki island, okinawa, japan, was diagnosed with anaplasma marginale infection based on clinical symptoms, blood examination, smear observation, 16s rrna and groel gene sequence analysis, and the result of a cf test. the cow was introduced into the farm from mainland japan as a calf in 1993, one year before the eradication of rhipicephalus (boophilus) microplus, the main vector of a. marginale in okinawa prefecture. it is possible that the ... | 2009 | 19135309 |