In each male, the following testicular lesions were scored: (1) hemocytic infiltration of the gonadal acini and phagocytosis of spermatogenic cells, (2) hemocytic infiltration of interacinal connective tissue, (3) aggregations of hemocytes under the mantle epithelium, and (4) occurrence of brown cells.
For example: a long exposure refers to a single, protracted shutter cycle to capture enough low-intensity light, whereas a multiple exposure involves a series of relatively brief shutter cycles; effectively layering a series of photographs in one image.
A short term test is performed (with a duration of 2 to 90 days) to quickly identify homes/buildings in which high radon levels may exist. Short term measurements showing less than 4 pCi/l (0.02 WL) indicate that the annual average is probably less than the guideline.our (4) pCi/l of radon is equivalent to 0.02 WL. A continuous exposure to 0.02 WL is equivalent to a yearly cumulative exposure of approximately one (1) Working Level Month (WLM) , which is derived by multiplying 0.02 WL by 24 hours/day by 365 days/year and dividing this value by 170 hours in a working month.