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Background Scrub typhus is endemic to a 13,000,000-km2 area of the Asia-Pacific region, and causes an annual incidence of 1 million people. The mortality rate of scrub typhus ranges from 6.1% to 25% in Southeast Asia. Natural infection of Orientia tsutsugamushi has been identified in domestic rodents in Shandong Province. However, infestation of chiggers and ticks on the domestic rodents and prevalence...
The external structure and solutable proteins of chorion were studied comparatively in amphimictic fish, i. e. red goldfish, Carassius auratus red variety and coloured goldfish, Carassius auratus coloured variety, and gynogenetic crucian carp, Carassius auratus gibelio. The chorion surface was smoother in gynogenetic crucian carp with higher contents of solutable proteins than those in amphimictic...
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