The Harderian glands of the one humped camel are compound tubuloal veolar glands. The glandular end-pieces were of three types. The first type (78%) was exclusively lined by light cells. The second type (15%) was lined by both light and dark cells. However the third type 7% was lined exclusively by dark cells. Lymphoid tissue, plasma cells, pigment ceils, adipocytes and cartilagenous platelets were demonstrated within the harderian gland.
PAS positive materials, acid-mucopolysaccharides and sudanophilic materials were also demonstrated within the cells of the glandular end pieces
and the ducts of these glands.