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.
_ Fenestrated vs. Non-Fenestrated Tubes. _ 1  A fenestration is a hole in the shaft of the tracheostomy tube, above the curvature, and therefore also above the cuff of a cuffed trach tube. The purpose of a fenestration is to allow for airflow upward and through the vocal cords.