An independent variable is the variable that the scientist changes,  and the dependent variables are the variables that the scientist  doesn't control.
Glycoprotein VI (platelet) also known as GPVI is a glycoprotein receptor for collagen which is expressed in platelets. In humans, glycoprotein VI is encoded by the GPVI gene.
Collagen hydrolysate and gelatin help balance hormones. Of the amino acids in collagen hydrolysate and gelatin, 35% is glycine and 21% is proline and hydroproline. Also important, collagen hydrolysate/gelatin completely lacks the amino acid tryptophan.