immediately preceded by starts_at_end_of Brugia sheathed microfilaria Brugia unsheathed microfilaria danielaraciti unsheathed microfilaria mature microfilaria Bma Brugia mature microfilaria In the mosquito, the microfilariae shed sheaths, penetrate the midgut, and migrate to the thoracic muscles were the microfilariae increase in size, molt, and develop into infective larvae (L1 and L3) over a span of 7-21 days. worm_development WBls:0000663 WBls:0000078 unsheathed microfilaria Bma 2014-11-10T09:29:36Z Brugia microfilaria unsheathed microfilaria