Human stem cells were injected into monkey embryos which were almost born, to research ways to grow human organs for transplants.

seen from United States
seen from United States
seen from Netherlands
seen from Japan
seen from Japan

seen from Malaysia
seen from Greece
seen from Japan
seen from Canada

seen from Japan
seen from Türkiye
seen from Japan
seen from France
seen from United States

seen from Malaysia
seen from Singapore
seen from Türkiye
seen from Russia
seen from Sudan

seen from Netherlands
Human stem cells were injected into monkey embryos which were almost born, to research ways to grow human organs for transplants.
Scientists have created the world’s first monkey embryos containing human cells in an attempt to investigate how the two types of cell develop alongside each other.
https://www.sanskritiias.com/current-affairs/the-first-human-monkey-embryos
(via PHOTOS: Rarely Seen Central American Ceramics Dating from 1,000 Years Ago | Around The Mall)
While some pieces, particularly from the Maya, took on an abstracted quality, this pre-classic human-monkey figure shows a turn toward realism. Pre-Classic period Maya human-monkey figure, AD 200–300 Villa de Zaragoza, Chimaltenango Department, Guatemala Pottery