Vaginal lubrication - Vaginal discharge. 1  The lubricative fluid contains water, pyridine, squalene, urea, acetic acid, lactic acid, complex alcohols and glycols, ketones, and aldehydes. [1] 2  Vaginal fluid is slightly acidic and can become more acidic with certain sexually transmitted diseases. The normal pH of vaginal fluid is between 3.8 and 4.5, whereas male semen is typically between 7.2 and 8.0 (a neutral substance has a pH of 7.0). Production
Freebase(0.00 / 0 votes)Rate this definition: Keratinocyte is the predominant cell type in the epidermis, the outermost layer of the skin, constituting 90% of the cells found there. Those keratinocytes found in the basal layer of the skin are sometimes referred to as basal cells or basal keratinocytes.
Langerhans cells of the skin. The epidermis is a stratified epithelium. In this location, specialised F4/80-positive macrophages called Langerhans cells (LC), can be seen spread specifically in the basal layer, in intimate contact with proliferating keratonocytes. LC have been of great interest because they can differentiate into specialised antigen-presenting dendritic cells. However, there is also considerable evidence that they regulate the function, differentiation and proliferation of epidermal keratinocytes.