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Mammalian cell cultures are typically grown in a medium that is supplemented with antibiotics and fetal bovine serum.
Which of the following best explains why fetal bovine serum is critical for the continued growth of cells in culture?
The fetal bovine serum contains antibodies that will help protect the cell culture from contamination.
The fetal bovine serum contains high levels of glucose that can be used as an energy source to fuel cell growth.
The fetal bovine serum contains growth factors that stimulate the cells to divide.
The fetal bovine serum contains electron carriers that are critical for cellular respiration, which fuels cell growth.