instruction:
In this task, you are given a sentence. You are expected to write the name of the organism substances in the body mentioned in the input. Although there might be several correct answers, you need to write one of them.
question:
 Values for individual samples ( circles ) and group median values ( columns ) are shown .
answer:
samples


question:
 Precautions against NH2 - terminal blocking during sample preparations are provided .
answer:
sample


question:
 This study aimed at correlating cardiac findings ( valvular and myocardial calcification , myocardial hypertrophy ) with clinical data ( age , sex , clinical manifestation , nephrolithiasis , nephrocalcinosis , hypertension , skeletal abnormalities , hypercalcemic syndrome ) and biochemical data ( serum calcium , serum phosphate , serum iPTH level , serum creatinine ) .
answer:

serum