Skip to main content
Fig. 4 | Zoological Letters

Fig. 4

From: Morphological development of the dorsal hindbrain in an elasmobranch fish (Leucoraja erinacea)

Fig. 4

Light micrographs of Leucoraja erinacea sections showing cerebellar and cerebellar-like development. Stage 27 embryonic brain showing the incipient Cbp (a) and octaval area (b). Inset is a section between a and b, showing the URL and e2 sulcus. Early stage 31 brain showing the LRL and the incipient LG (c, arrow) with PCB’s in the DON (AENs) and MON (cell plate X) (d). Principal cell bands can be seen in inset from d, showing a higher magnification image of the PCB’s (e). Mid-stage 32 brain showing the incipient LG, MG, GE and cerebellar body (f), the DGR-like “sliver” of cells (g, arrow) and the newly formed DON and MON ML’s (h). Early stage 33 brain showing the cerebellar ML as well as LG, MG, GE and the Sll. Arrow points to Purkinje cell layer (i). Early stage 33 brain showing the newly formed DGR. Arrow points to PCB (j). Caudal section of the early stage 33 brain showing the ML extending past the obex (k). Late stage 33 brain showing the fully formed DGR, DON and MON MLs (arrows point to PCB) (l). Scale bars equal 100 μm. Abbreviations: b, sulcus b; c, sulcus c; Cb, cerebellum; Cbp, cerebellar plate; DON, dorsal nucleus; e2, sulcus e2; GE, granular eminences; LG, lateral granule cell mass; LRL, lower rhombic lip; MG, medial granule cell mass; ML, molecular layer; MON, medial nucleus; PCB, principal cell band; Rhom, rhombencephalon; Sll, sulcus longitudinalis lateralis; URL, upper rhomic lip

Back to article page