四环素调控系统胎牛血清
胎牛血清一般会含有四环素（Tet），当使用非常敏感的Tet-诱导的基因表达系统时，往往会遇到非预期基因表达的问题。为确保精确的基因表达，因此建议使用四环素调控系统胎牛血清。
特级胎牛血清
Fetal Bovine Serum (FBS) is derived from coagulated whole blood, collected from the fetus by cardiac puncture.
FOETAL BOVINE SERUM HEAT INACTIVATED (NO N-USA ORIGIN)
Fetal Bovine Serum, Heat Inactivated, sterile-filtered, cell culture tested
GemCell ™ U.S. Origin Newborn Calf Serum (<14 days of age)
Sterile-filtered Mycoplasma-tested and virus-screened Ships on dry ice. Store frozen at -20 to -10°C