Methods of forming proteinaceous products such as cell culture supplement
capable of supporting the growth and culturing of cells, tissue, and
organs, are generally disclosed. One method generally provides for the
collection of the internal tissue of an animal, such as a bovine, and the
processing of the internal tissue to degrade and/or lyse the tissue
components. A cell culture supplement or other proteinaceous product can
be prepared from the processed tissue. A proteinaceous product can
include, for example, a complete protein profile of the tissue or only
certain biological factors extracted from the tissue. Collected internal
tissue can be lymphatic tissue such as the supramammary glands of a dairy
or beef cow or the thymus gland of a veal calf.