Nancy Ma's night monkey

Nancy Ma's night monkey (Aotus nancymaae) is a night monkey species from South America. It is found in Brazil and Peru. The species is named after Dr. Nancy Shui-Fong Ma.^[3]

Nancy Ma's night monkey[1]
Conservation status
Vulnerable  (IUCN 3.1)[2]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Primates
Suborder:	Haplorhini
Infraorder:	Simiiformes
Family:	Aotidae
Genus:	Aotus
Species:	A. nancymaae
Binomial name
Aotus nancymaae Hershkovitz, 1983
Nancy Ma's night monkey range

It is known in medical research as a model organism for studying the Duffy antigen. Nancy Ma's night monkeys have also been found to have an evolutionary pattern change in the hormone oxytocin. It was believed that all placental mammals had the same OXT amino acid chain until the discovery of a change in this New World monkey and others.^[4]