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Left ventricular capillary length density ( mm / mm ( 3 ) ) increased gradually with alinidine administration ; a 15 % increase after 2 weeks and a 40 % increase after 3 weeks of alinidine treatment were documented .
 Left ventricular capillary
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Left ventricular capillary