Fig. 2. Pigmentation in the sensory vesicle of Ciona savignyi imc and
spt mutants is deficient. (A) Diagram of the Ciona sensory
vesicle. (B,D,F) Nomarski images of the otolith in wild type (B), homozygous
imc (D) and homozygous spt (F). (C,E,G) Nomarski images of
the ocellus in wild type (C), homozygous imc (E) and homozygous
spt (G). lc, lens cells; p, pigmented cell in ocellus; ph,
photoreceptors; Scale bars, 20 µm.