A diverse development of 5-HT1A receptor binding is relevant to behavioral differences observed in adult mice of two genetically closely related inbred strains

►2 genetically closely related mouse inbred strains differ in behavior ►differences are associated with strain-specific 5-HT1A receptor binding patterns ►the strain-specific receptor patterns develop within 3 weeks after birth ►a genetic determination for this process is likely ►one determinate for behavioral differences is found