Which two primate species are most used?

Which two primate species are most used?

• A. Marmoset and Squirrel monkey
• B. Baboon and Gibbon
• C. Rhesus and Cynomolgus
• D. Chimpanzee and Gorilla

Answer: (C)

The most used primates in research are rhesus macaques and cynomolgus macaques because they strike a strong balance between translational relevance to humans and practical considerations in the lab. Their biology and physiology are similar enough to humans to make them reliable models across many disease areas, yet they are manageable in size, temperament, and care requirements for routine husbandry, veterinary treatment, and experimental procedures. There is a vast amount of historical data and standardized baseline information on these species, which supports reproducibility and interpretation of results across different labs and studies. They also have well-developed breeding programs and readily available colonies, making supply more reliable and costs more predictable. Because of these factors, regulatory agencies and GLP toxicology guidelines are well-aligned with using these macaques for preclinical testing and infectious disease research. Other primates, like smaller New World species such as marmosets and squirrel monkeys, are increasingly used but do not yet match the breadth of data, regulatory familiarity, or practical infrastructure of macaques. Baboons and gibbons are used in some contexts but are less common due to higher costs, species-specific husbandry needs, and limited historical data. Great apes like chimpanzees and gorillas face strict ethical, conservation, and regulatory constraints, leading to far less use in typical biomedical research.

The most used primates in research are rhesus macaques and cynomolgus macaques because they strike a strong balance between translational relevance to humans and practical considerations in the lab. Their biology and physiology are similar enough to humans to make them reliable models across many disease areas, yet they are manageable in size, temperament, and care requirements for routine husbandry, veterinary treatment, and experimental procedures. There is a vast amount of historical data and standardized baseline information on these species, which supports reproducibility and interpretation of results across different labs and studies. They also have well-developed breeding programs and readily available colonies, making supply more reliable and costs more predictable. Because of these factors, regulatory agencies and GLP toxicology guidelines are well-aligned with using these macaques for preclinical testing and infectious disease research.

Other primates, like smaller New World species such as marmosets and squirrel monkeys, are increasingly used but do not yet match the breadth of data, regulatory familiarity, or practical infrastructure of macaques. Baboons and gibbons are used in some contexts but are less common due to higher costs, species-specific husbandry needs, and limited historical data. Great apes like chimpanzees and gorillas face strict ethical, conservation, and regulatory constraints, leading to far less use in typical biomedical research.