Some people with chest pain have normal or minimal narrowing of heart arteries; in these patients, vasospasm is a more likely cause for the pain, sometimes in the context of Prinzmetal's angina and syndrome X.
You are here. Pure Live Seed. Pure live seed (PLS) is a measure used by the seed industry to describe the percentage of a quantity of seed that will germinate. PLS is obtained by multiplying the purity percentage by the percentage of total viable seed, then dividing by 100.
It has staunchly avoided the gold standard of background checks, the type required for taxi drivers in most California cities: Live Scans. No ridesharing companies -- Uber, Lyft, or Sidecar -- do them. Anyone following Pando's ridesharing coverage has seen me harp and harp and harp on the importance of Live Scans.