Nutrition and immunity.
D000367:Age Factors; D000368:Aged; D003165:Complement System Proteins / Q000032:analysis; D006801:Humans; D007111:Immunity, Cellular; D007121:Immunocompetence; D007223:Infant; D007228:Infant Nutrition Disorders / Q000276:immunology; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D009748:Nutrition Disorders / Q000276:immunology; D009747:Nutritional Physiological Phenomena; D011502:Protein-Energy Malnutrition / Q000276:immunology; D014131:Trace Elements / Q000172:deficiency
D014131:Trace Elements; D003165:Complement System Proteins