Four marmosets, whose parents were given a gene to create green fluorescence, have been born with the gene. That makes them the first artificially transgenic primates. `
The image shows These marmosets are the first transgenic primates. Here are the baby pictures of a: Hisui (Jade), b: Wakaba (Young Leaf), c: Banko, d: left, Kei; right, Kou. Insets show one of each baby’s paws (right) beside the paw of a nontransgenic marmoset under ultraviolet light. Except for Banko, the transgenic animals make green fluorescent protein in their skin.
(Image credit: E.Sasaki et al., 2009, in Nature)