HTR1A and sudden infant death syndrome: Given the effect of age on 5-HT1A binding in nuclei of infants not classified as SIDS, i.e., baseline controls, as well as the selective effect of PCA on 5-HT1A binding in the NTS and MAO of SIDS infants, we compared 5-HT1A binding in nuclei of premature SIDS cases against premature controls and, separately, between term SIDS and term control infants.