title: Studies on delayed hypersensitivity in children with hematologic disorders.
mesh_terms: D006402:Hematologic Diseases / Q000276:immunology*; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D066298:In Vitro Techniques; D007223:Infant; D008213:Lymphocyte Activation; D012867:Skin / Q000276:immunology