Description Usage Format Source Examples
Data on cell-mediated immunocompetence (PHA) and humoral immunity (SRBC) in Zebra Finches that received supplemental carotenoids (CAROT) and those that did not (NO).
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A data frame with 20 observations on the following 3 variables.
treatmenta factor with levels: CAROT and NO
PHAa numeric vector
SRBCa numeric vector
McGraw, K.J. and D.R. Ardia. 2003. Carotenoids, immunocompetence, and the information content of sexual colors: an experimental test. The American Naturalist 162: 704-712.
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