Factors influencing the specificity of action of an antileukemic agent (aminopterin):  host age and weight.
D000375:Aging / Q000502:physiology*; D000630:Aminopterin / Q000494:pharmacology*; D000818:Animals; D001835:Body Weight; D007942:Leukemia, Experimental; D012680:Sensitivity and Specificity
D000630:Aminopterin
AGING/physiology; AMINOPTERIN/effects; BODY WEIGHT; LEUKEMIA/experimental