we used the trypsin from the invitrogen.$ G7 K+ |& q+ O
But they provide the red and white trypsin with the same concentration. : n' J% C- [: R5 l! n3 y/ gnormally we use the write one for the ES and NSC culture. * \& v7 S7 Z+ `, j* isome people know the difference between these two things?