KMC ||4th stage¦¦للدراسه

Other

Richettsia

Chylamydia

Mycoplasma

Borrelia

Trepanomsoma

unsegmented genome of single-stranded positive-sense RNA. ➢The helical nucleocapsid has club- or petal-shaped projections, suggestive of a solar corona. ➢ The viral structural proteins include a 1)phosphorylated nucleocapsid (N) protein, 2) membrane (M) glycoprotein that serves as a matrix protein interacting with the nucleocapsid, 3) the glycoprotein S (spike glycoprotein).by spike glycoprotein the virus attach to host ➢ human coronavirus OC43, contain a third glycoprotein HE (hemagglutinin esterase) -The human coronaviruses produce "colds," usually afebrile, in adults -nucleic acid test paper:for the rapid detection of SARS with the naked eye observation within three minutes. -SARS COV 2 belong to b coronaviruses

Hsv lec2

Lec 1 virology

Influenza virus

Mycobacterium are neither gram-positive nor gram-negative (i.e., they are stained poorly by the dyes used in Gram stain). They are virtually the only bacteria that are acid-fast. (One exception is Nocardia asteroides, the major cause of nocardiosis, which is also acid-fast.)

M.leprosy