Is there a mistake on p. 67 of the Limma User's Guide (27 October 2004)? Firstly, MA.pq is not defined, but the density is plotted. Secondly, we have normalizeWithinArrays, although I think that quantile normalization is a normalizeBetweenArrays method. Naomi S. Altman 814-865-3791 (voice) Associate Professor Bioinformatics Consulting Center Dept. of Statistics 814-863-7114 (fax) Penn State University 814-865-1348 (Statistics) University Park, PA 16802-2111