“The composition of animal-derived components in fetal bovine serum is uncertain, and immunogenicity cannot be completely eliminated. In addition, batch-to-batch variability makes the cell ...

Baikie, A. G., Jacobs, P. A., McBride, J. A., and Tough, I. M., Brit. Med. J., i, 1564 (1961). Benirschke, K., Brownhill, L., and Braugh, F. G., Lancet, i, 594 (1962 ...