938
Human platelets express two cell surface G - protein - coupled protease - activated receptors ( PARs ) for thrombin : PAR - 1 and PAR - 4 .
 Anatomy: platelets; Anatomy: cell surface
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: platelets; Anatomy: cell surface