Cell Biology. In the article “Scavenger receptor class B, type I (SR-BI) is the major route for the delivery of high density lipoprotein cholesterol to the steroidogenic pathway in cultured mouse adrenocortical cells” by Ryan E. Temel, Bernardo Trigatti, Ronald B. DeMattos, Salman Azhar, Monty Krieger, and David L. Williams, which appeared in number 25, December 9, 1997, of Proc. Natl. Acad. Sci. USA (94, 13600–13605), the following correction should be noted. The equation on page 13601 should be as follows: