
Lens induction in vertebrates: Variations on a conserved theme of signaling events
Keywords: ANP; anterior neural plate; BMP; bone morphogenetic protein; ERK; extracellular signal related kinase; FGF; fibroblast growth factor; Hh; hedgehog; HH; Hamburger and Hamilton stage; NCC; neural crest cell; OV; optic vesicle; PLE; presumptive lens ectoderm