1.   Invitro, high extracellular calcium concentrations inhibit the proliferation of human colonic epithelial cells and several colonic cancer cell lines.

2.   Some cell lines, however, achieve what appears to be immortality.

3.   There are also patents on varieties of seeds and plants, as well as unusual genes and cell lines from indigenous peoples.

4.   Three independent transfected cell lines were isolated and studied.

5.   It is also possible to patent plasmids and cultured cell lines.