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
Transfection is the transient or stable introduction of exogenous molecules and genetic material, DNA or RNA, into cultured mammalian cells and is commonly utilized in biological laboratories for studying gene function, modulation of gene expression, biochemical mapping, mutational analysis, and protein production.