1 Cats: Cats normally have their first estrous cycle between 4 and 6 months of age, with the average age around 5 months. 2  The female cat has 2-4 estrous periods every year, each lasting 15-22 days. 3  If she is bred, estrus seldom lasts more than 4 days.
Lactate dehydrogenase (LD or LDH) is an enzyme involved in energy production that is found in almost all of the body's cells, with the highest levels found in the cells of the heart, liver, muscles, kidneys, lungs, and in blood cells; bacteria also produce LD.actate dehydrogenase (LD or LDH) is an enzyme involved in energy production that is found in almost all of the body's cells, with the highest levels found in the cells of the heart, liver, muscles, kidneys, lungs, and in blood cells; bacteria also produce LD.
logical conditions. Lactate dehydrogenase (LDH) is a cyto-plasmatic enzyme present in essentially all major organ systems. The extracellular appearance of LDH is used to detect cell damage or cell death [1â3]. Due to its extra-ordinarily widespread distribution in the body, serum LDH is abnormal in a host of disorders [3â9]. It is released