Light and electron microscopic observations on lipid droplets of the sebaceous flank gland of the shrew,Suncus murinus viridescens (Blyth)
Light and electron microscopic investigations have been made on the lipid droplets of the sebaceous flank gland alveoli of the Indian musk shrew,Suncus murinus viridescens. The undifferentiated sebaceous cells can be distinguished from the differentiating and differentiated cells by the absence of lipid droplets in the former. Adjacent droplets in the differentiating cells fuse to form larger droplets. Lipid droplets are also synthesized in the differentiating cells. Large accumulation of lipid droplets are seen in well differentiated cells. The cells of the inner layer of the sebaceous alveoli disintegrate and the holocrine products are liberated into the lumen. The probable role of mitochondria and polyribosomes in the synthesis and development of lipid droplets in the sebaceous cells of the flank gland is discussed.