RT Book, Section A1 Brites, Dora A1 Brito, Maria Alexandra A2 Stevenson, David K. A2 Maisels, M. Jeffrey A2 Watchko, Jon F. SR Print(0) ID 56322515 T1 Chapter 7. Bilirubin Toxicity T2 Care of the Jaundiced Neonate YR 2012 FD 2012 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-176289-2 LK accesspediatrics.mhmedical.com/content.aspx?aid=56322515 RD 2024/04/19 AB For many years, unconjugated bilirubin (UCB) was thought to be a useless waste product of heme catabolism, with no physiological function, but with potential toxicity. Toxicity resulting from unconjugated hyperbilirubinemia has been known for more than a century, since the landmark study of Schmorl describing autopsy findings from 120 jaundiced infants, as cited by Hansen.1