title: Corrections and clarifications.
abstract: Figure 1, parts A and C (p. 1349), of the Research Article "Calcium-calmodulin modula- tion of the olfactory cyclic nucleotide-gated cation channel" by Mingyao Liu et al. (25 Nov., p. 1348) were incorrectly printed. The correct figures appear below. On page 1351 of the same article, in line 25 of the first column of text, "GMP" should have been "AMP." In the second line of the text on page 1352, the first "(C.Ln)o" should have been "(C.Ln)c."