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In order to inquire into the functional state of adrenal cortex in patients with pulmonary heart disease , the number of glucocorticoid receptors ( GCR ) of peripheral blood leukocytes in patients with chronic pulmonary heart disease was determined with radioligand-binding assay and the corresponding plasma cortisol levels were assessed with radioimmune assays .
 glucocorticoid receptors, GCR, peripheral blood leukocytes
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 glucocorticoid receptors, GCR, peripheral blood leukocytes