1944
Here we show that angiogenesis is severely impaired in PSMA - null animals and that this angiogenic defect occurs at the level of endothelial cell invasion through the extracellular matrix barrier .
 Anatomy: endothelial cell; Anatomy: extracellular matrix barrier
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: endothelial cell; Anatomy: extracellular matrix barrier