Fig. 7 in Neurogenesis in directly and indirectly developing enteropneusts: of nets and cords

Fig. 7 Ultrastructural details of the developing nervous system in Saccoglossus kowalevskii. a Sagittal section of a 1-gill-slit hatchling of S. kowalevskii. b Ultrastructural detail of the red-marked box in a showing a continuous layer of neurites of 2–4-μm thickness. c Colorcoded image of the micrograph shown in b. d Sagittal section of a 2- gill-slit juvenile of S. kowalevskii. e Ultrastructural detail of the redmarked box in c showing only single and scattered, small neurite