Fig. 5From: Embryogenesis in the parasitic nematode Heterodera glycines is independent of host-derived hatching stimulationThe stylet protractor muscle development precedes the complete development of the stylet. Pre-hatched a and hatched b J2 Heterodera glycines were stained with phalloidin and imaged using epifluorescence (left) and DIC optics (overlay, right). The stylet protractor muscles were present prior to the complete formation of the stylet knobs (arrows). Scale, 15 μmBack to article page