1 Preseed maintains this alkalinity while other vaginal lubricants tend to have pH values below 7.0 and as low as 3.5 (very acidic and deadly to sperm.  Osmolality Ã¢â¬â Semen has a specific particle concentration that keeps sperm motile and healthy.
Causes of instantaneous or sudden death. Instantaneous or sudden death may result from dysfunction/abnormalities of the heart and its vessels, noncardiac vessels, pulmonary system, and central nervous system (CNS).
the most common cause of sudden death in cats is hypertrophic cardiomyopathy other syndromes include feline infectious peritonitis fip feline immunodeficiency virus fiv and toxoplasmosis a parasitic disease hypertrophic cardiomyopathy is a hardening and thickening of the heart muscle