title: When one is better than two.
authors: Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA. mej@mail.med.upenn.edu
authors: Jan J
authors: JJ
authors: Melenhorst
mesh_terms: D001391:Azo Compounds / Q000008:administration & dosage*; D002454:Cell Differentiation; D005312:Fetal Blood / Q000187:drug effects*; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D011720:Pyrazoles / Q000008:administration & dosage*; D018336:Receptors, Aryl Hydrocarbon / Q000037:antagonists & inhibitors*
chemical_list: C511621:2-methyl-2H-pyrazole-3-carboxylic acid (2-methyl-4-o-tolylazophenyl)amide; D001391:Azo Compounds; D011720:Pyrazoles; D018336:Receptors, Aryl Hydrocarbon