Ribosomal RNA is the RNA of the ribosome constituting about 90 percent of total cellular RNA.
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- X factor
X factor is heme; required for the growth of certain Haemophilus spp.
Modulator is the regulatory metabolite that binds to the allosteric site if an enzyme and alters the maximum velocity. Also called effectors, modifier.
Latent is not obvious or manifest; a disease carrier who shows no symptoms has a latent infection.
Pus is the fluid product of inflammation, containing serum, bacteria, dead cells, and leukocytes.
Lysin is an enzyme, antibody, or other substance capable of disrupting or disintegrating cells (lysis).
Transformation is the phenomenon by which certain bacteria incorporate DNA from related strains into their genetic makeup.
Endemic with reference to a disease, one that has a low incidence but which is constantly present in a particular geographic region.