While we're on this topic... I was interested in testing hypotheses (plural) that acid base chemistry (blood H+/HCO3/PCO2) or closely-related metabolic processes could influence the rate of viral replication, possibly by having some sort of effect on the acidity of phagocytes, vesicles or other cellular/intracellular-level "host" environments.
There appears to be a relationship between age and blood pH, with a possibility of a change point around retirement age. This could (being somewhat speculative) be related to the differences we see in mortality rates by age. However, I've got no idea how to test the second part of the hypotheses, that blood acidity (or any other metabolic process) could influence the acidity of phagocytes or vesicles. Suggestions welcome... ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.