A catio can be a very simple mesh box that is attached to the outside of a window for a cat to sit in, a home-made concoction of PVC pipe and mesh, or a full-blast home addition with permanent walls and a roof, and everything in between.
1-RM Tests (Repetition maximum tests). purpose: to measure maximum strength of various muscle and muscle group s. procedure: One repetition maximum tests (1-RM) is a popular method of measuring isotonic muscle strength.
Although this mechanism has been referred to as a clock or timing mechanism, the replicative limit of normal cells is actually related to rounds of DNA replication, and not to the passage of time. Hayflick suggested the term replicometer be used to designate the putative molecular event counter.