huIs120 [hsp-16.2p::sfrp-1 + myo-2p::Tomato]. Wild-type under normal culture conditions. Heat-shock (10 min) during embryogenesis causes embryonic lethality and HSN migration defects. Heat-shock (10 min) at hatching causes Ql and QR migration defects. Reference: Harterink M, et al. Development. 2011 Jul;138(14):2915-24.