Three cell lineages (founders and test cell lines) and their success rates for animal cloning. Live calving rates for the cell lines were calculated by the live calf counts at birth divided by recipient numbers used for embryo transfer as shown in parentheses. Cell lines with 7% or more living rates are indicated as High (H; high calving rate) and those with 0% live calving rate as Low (L; low calving rate). The 3 founder cell lines (F1, F2 and F3) were established from 3 different fetuses (day 40) respectively that were produced by artificial insemination. The 6 test cell lines, except for cell line L3, were derived from 2 rounds genetic modification and somatic cell cloning. L3 line was derived from 3 rounds of genetic modification and somatic cell cloning.