5801
Because the identity of pulmonary endothelial SOCs is unknown , but mammalian homologues of the Drosophila melanogaster transient receptor potential ( trp ) gene have been proposed to form Ca2 + entry channels in nonexcitable cells , we performed RT - PCR using Trp oligonucleotide primers in both rat and human pulmonary arterial endothelial cells .
 pulmonary endothelial, cells, pulmonary arterial endothelial cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 pulmonary endothelial, cells, pulmonary arterial endothelial cells