Epileptic Convulsion in Chimera Mice

Using a method of aggregation of embryos from the Fl progenies of ddY X El and ddY X C57BL/6J, seven chimera mice were produced. These seven chimera mice manifested various distributions of the white coat color derived from the Fl progeny of ddY X El. It was found that the chimera mouse, which had a larger percent of the white coat color, had a higher susceptibility to epileptic convulsion, the susceptibility having been proportional to the degree of the tissue mosaicism.