Fig. 2 in Histological, Topographical And Ultrastructural Organization Of Different Cells Lining The Olfactory Epithelium Of Red Piranha, Pygocentrus Nattereri (Characiformes, Serrasalmidae)

Fig. 2. Photomicrographs of the olfactory epithelium of P. nattereri by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and histological features stained with Mallory's triple (MT) stain. A — transitional zone between sensory epithelium (SE) with receptor cells (solid arrows) and non-sensory epithelium (NSE) having a series of mucous cells (MC) (Broken arrows), labyrinth cells (LC) and stratified epithelial cells (arrow heads). Olfactory epithelium separated from central core (CC) by a basement membrane (BM) (MT) ×400. B — surface of non-sensory epithelium showing densely arranged ciliated supporting cells (solid arrows) encircled the non-ciliated supporting cells (SC) with adhering mucin mass (arrow heads). Note the opening of MC (broken arrows) in between SC (SEM) ×4500. C — dendrite of receptor cell (RC) emerging out from basal body (broken arrow). Note microtubules of rod (solid arrow) parallel arranged (TEM) ×5000. D —nuclei of receptor cells (N) showing dispersed heterochromatin (arrow heads). Note the presence of mitochondria (solid arrows) adjacent to nucleus (TEM) ×500. (E) Showing cisterns of rough endoplasmic reticulum (rER) (arrow heads) encircling nucleus (solid arrow). Note Golgi apparatus (broken arrow) adjacent to rER (TEM) ×4000. F — OEP lined with microvillous cells (MV), mucous cell (MC) and supporting cell (broken arrow) (TEM) ×2100. G — microvillous cells exhibiting abundant ribosomes (broken arrows) and extended mitochondria (arrow heads). Solid arrow indicates nucleus (TEM) ×5000. H — axons (broken arrows) of receptor cells run parallel on both sides of basal cells (solid arrow) (TEM) ×5000.