How did melvin calvin prove that the carbon in carbon dioxide is the same carbon formed in sugar molecules?

In a scientific research, a scientist did an experiment, in which the carbon of the CO2 is radioactive, and used it in the photosynthesis! after the sugar molecule is obtained, he found that the carbon in that was the radioactive one, so the result was concluded !!!

Calcinosis is the diagnostic term that means an abnormal buildup of calcium on the kneecap (patellar) surface. it is a term uses to describe a group of disorders in which calcium deposits form in the skin. it is also referred to the abnormal deposit of calcium phosphate.