Figure 1. CellPrime rTransferrin recombinant human transferrin provides an animal-free alternative to iron salts for industrial cell culture. It is a recombinant analogue of human transferrin expressed in Saccharomyces cerevisiae. Supplied as a human holo-transferrin analogue, CellPrime rTransferrin binds specifically to the transferrin receptor, thereby facilitating iron uptake into cells for optimal cell culture performance. Here we describe cell culture data demonstrating that CellPrime rTransferrin shows equivalence to human transferrin (hTf) and superiority to bovine transferrin (bTf) in stimulating cell…