Hello, I am trying to understand how normalize.AffyBatch.quantiles works. From what I understand of the code, it seems that rows (corresponding to a probe) which contain even a single NA are dropped; then, the quantile-normalization method described in Botstein et al. is applied to the remaining rows, and these normalized rows are put back into the original batch. In other words, values in a row that contains NA's remain unchanged. Questions: - Is this really how it works? - If yes, is this the intended behavior? Thank you, Omar.