That was exactly the point. There are symptoms and signs of ageing that may
be specific or in some cases, as in the case of AGEs, a bit more widely
observed than others, yet an extremely large variation in the extent
and rate of occurrence of any such symptoms make them useless as predictors
of real biological age. This discussion had started in response to an
enquiry "how do you determine the age of a rat caught from somewhere outside..?
There are no markers of individual age. There are trends, possibilites on
a huge scatter plot.
Suresh Rattan/Denmark
