Ultrastructural Comparison of Processing of Protein and Pigment in the Ink Gland of Four Species of Sea Hares

Figure 1

Stages in the development of a vesicle (not to scale). (a) Vesicle cell. (b) Vesicle initial. (c) Vesicle. cm, cell membrane; d, duct; m, muscle; n, nucleus.

(a)

(b)

(c)