13710
We studied the number of glucocorticoid receptors and dissociation constant in isolated human lymphocytes as well as blood concentrations of hormones produced by the hypothalamic-hypophyseal-adrenocortical system in three experimental series: at normal (17 subjects ), decreased (10 subjects , a 360-d head-down bed rest) and increased (8 subjects , physical exercise on bicycle ergometer) levels of motor activity.
 ( protein: glucocorticoid receptors, None) , ( cell type: isolated human lymphocytes, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: glucocorticoid receptors, None) , ( cell type: isolated human lymphocytes, None) 