Leg pain is also frequently a sign of injury, such as the following: Muscle strain is a common injury that happens when the muscle fibers tear as a result of overstretching. It often occurs in the larger muscles, such as the hamstrings, calves, or quadriceps.
medical Definition of superinfection : a second infection superimposed on an earlier one especially by a different microbial agent of exogenous or endogenous origin that is resistant to the treatment used against the first infection
Medical Definition of TRANSFECTION. : infection of a cell with isolated viral nucleic acid followed by production of the complete virus in the cell; also: the incorporation of exogenous DNA into a cell.â transÂ·fect \-Ëfekt\ transitive verb.ADVERTISEMENT. trans- + in fection.efinition of TRANSFECTION. : infection of a cell with isolated viral nucleic acid followed by production of the complete virus in the cell; also: the incorporation of exogenous DNA into a cell. â transÂ·fect \-Ëfekt\ transitive verb. ADVERTISEMENT. trans- + in fection.