You may have an infection.     A positive finding of the enzyme leukocyte esterase in urinalysis  indicates the presence of white blood cells in the urine. This  n â¦ ormally suggests inflammation of some sort, often from a urinary  tract infection.
The nictitating membrane of a masked lapwing as it closes. The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for protection and to moisten it while maintaining vision.
Medical Definition of BASEMENT MEMBRANE. 1. : a thin extracellular supporting layer that separates a layer of epithelial cells from the underlying lamina propria and is composed of the basal lamina and reticular lamina.2. : basal lamina. a thin membranous layer of connective tissue that separates a layer of epithelial cells from the underlying lamina propia. ADVERTISEMENT. noun baseÂ·ment membrane \ËbÄ-smÉnt-\. 1.