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Forensic serology is the detection, identification, classification, and study of various bodily fluids such as blood, semen, saliva, and urine, and their relationship to a crime scene. A forensic serologist may also be involved in DNA analysis and bloodstain pattern analysis .
The blood–saliva barrier (BSB) is a biological barrier that consists of the epithelial cell layers of the oral mucosa and salivary glands, and provides physiological separation between blood vessels and the saliva in the oral cavity. [1] [2] In Russian academic literature the barrier is usually called the hematosalivary or hematosalivarian ...
Nitrate extracted from blood by the salivary gland, accumulates in saliva, which is then reduced to nitric oxide to have a direct blood pressure lowering effect. Decreasing saliva nitrite in volunteers that already had elevated levels, a rise in systolic and diastolic blood pressure resulted. Furthermore, pre-hypertensives may be more sensitive ...
Having enough saliva helps neutralize acids created by the mouth’s bacteria. This “natural buffer” fights cavities, and saliva’s “washing action” clears away bacteria and food ...
Secretor status refers to the presence or absence of water-soluble ABO blood group antigens in a person's bodily fluids, such as saliva, tears, breast milk, urine, and semen. People who secrete these antigens in their bodily fluids are referred to as secretors, while people who do not are termed non-secretors.
Saliva on a baby's lips. Saliva (commonly referred to as spit or drool) is an extracellular fluid produced and secreted by salivary glands in the mouth.In humans, saliva is around 99% water, plus electrolytes, mucus, white blood cells, epithelial cells (from which DNA can be extracted), enzymes (such as lipase and amylase), and antimicrobial agents (such as secretory IgA, and lysozymes).
Blood-laced mucus from the sinus or nose area can sometimes be misidentified as symptomatic of hemoptysis (such secretions can be a sign of nasal or sinus cancer, but also a sinus infection). Extensive non-respiratory injury can also cause one to cough up blood. Cardiac causes like congestive heart failure and mitral stenosis should be ruled ...
Wound licking is an instinctive response in humans and many other animals to cover an injury or second degree burn [1] with saliva. Dogs, cats, small rodents, horses, and primates all lick wounds. [2] Saliva contains tissue factor which promotes the blood clotting mechanism.