"Chromatophore of Sepia, magnified. nuc, nuclei in wall of sac; pigm, pigment; rad. mus, radiating strands of muscle." -Parker, 1900

Sepia Chromatophore

"Chromatophore of Sepia, magnified. nuc, nuclei in wall of sac; pigm, pigment; rad. mus, radiating strands…