车床
发表于 2025-3-30 10:40:56
http://reply.papertrans.cn/47/4621/462078/462078_51.png
Cursory
发表于 2025-3-30 13:05:47
Immunization of Cattle Against , inhibit the development of the livestock industry. At present, the only method of controlling the disease is by close-interval application of acaricides to cattle, in dips or sprays, to kill the tick vector. Susceptible cattle not so protected have a morbidity and mortality approaching 100%.
VAN
发表于 2025-3-30 19:47:56
Immunoprophylaxis Against African Trypanosomiasismiasis of cattle and sheep is perhaps the last practical possibility which would occur to most people whose daily business is concerned with the control of trypanosomiasis in the field in Africa today. The simple fact is that no one has yet evolved a technique of immunization which has been clearly
训诫
发表于 2025-3-30 22:32:56
Immunoprophylaxis Against Chagas’ Disease909 (Chagas 1909, 1910), is a major public health problem in rural areas of Central and South America. Approximately 35 million people are estimated to be at risk of . infection, and at least 7 million have already been infected (Pan American Health Organization 1970). Human cases have been describe
LEVER
发表于 2025-3-31 01:47:51
http://reply.papertrans.cn/47/4621/462078/462078_55.png