title: Fusion of rat and mouse morulae and formation of chimaeric blastocysts.
mesh_terms: D000818:Animals; D002449:Cell Aggregation; D002455:Cell Division; D002459:Cell Fusion; D002478:Cells, Cultured; D005260:Female; D006822:Hybrid Cells; D008722:Methods; D051379:Mice; D009030:Mosaicism; D010063:Ovum / Q000166:cytology*; D011247:Pregnancy; D051381:Rats