1.   The human angioblasts generated blood vessels within the damaged rat hearts and prevented the overgrown heart muscle cells from dying.

2.   Opinions aside, cryobiologists are talking plenty about the beating rat heart.

3.   Du Plessis said that rat heart was first saturated with a preservation fluid perfected over the past two years by one of his technicians, Olga Visser.

4.   They found extracts from Urticina piscivora to be especially active in stimulating contractions of rat hearts.