Fig. 6
From: Morphology of brood pouch formation in the pot-bellied seahorse Hippocampus abdominalis
Sagittal sections of the seahorse brood pouch. Sections of the early stage just after a baggy structure is formed (a, c, e), and in the late stage (b, d, f), after hematoxylin and eosin (HE) staining (a, b), reticulin silver (RS) staining (c, d), and Masson’s trichrome (MT) staining (e, f). The ventral side is to the left and the dorsal side is to the right. The lettered boxes in a and b indicate the corresponding sites of high magnification views shown in c-f. Scale bars: a, c–f = 40 μm; b = 1 mm. br, body ring; le, luminal epithelium; oe, outer epithelium; pp, pseudoplacenta; sc, stratum compactum; sk, skeletal muscle; sm, smooth muscle; ss, stratum spongiosum