A superb compilation of reviews from leading experts in the field of nuclear receptors, volume 16 in the Advances in Developmental Biology series covers the role of different nuclear receptor subfamilies in development, physiology and metabolism. This volume brilliantly reviews how genetic defects in the function of nuclear receptors leads to various developmental defects. Receptors discussed include: thyroid receptors, peroxisome proliferators activated receptors, and retinoic acid receptors. Additionaly, this volume offers an indespesable chapter on the orphan receptors Ftz-F1, COUPs, and RORs in embryonic and postnatal development.