lipase

Functions of Saliva

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Saliva is a secretion of salivary glands. Contains maximum water content (99.5%) and 0.5% solids. Includes solid content like organic, inorganic and gases also. Various important functions which leads to many inconveniences if absent. A) Swallowing of food Moistening of food occurs when food is taken from mouth. Dissolving of food also assisted by saliva. … Read more

Virulence factors of Group-A Streptococcus

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Streptococcus are gram positive, catalase negative cocci. Are spherical or ovoid, 0.5-1µ in diameter, arranged in chains, non-motile and non-sporing. They may become gram negative in ageing culture when the bacteria die. Some of the strains possess capsules made up of hyaluronic acid while some of the strains possess capsules composed of polysaccharide. Human beings … Read more