The number of parasites transmitted varied over a wide range in the 58 ears in which Leishmania were detected and demonstrated a clear bimodal distribution.
英
美
- 感染了更低剂量的小鼠出现了较小的病灶,但是常常出现慢性感染,让宿主成为了这种寄生虫的长期贮存宿主。