9935
Zinc deficiency in 3T3 cells induced by the use of diethylenetriaminepentaacetate ( DTPA ) has been shown to impair calcium entry associated with failure of proliferation when the cells are stimulated with polypeptide growth factors ( GF ) .
 Chemical: Zinc; Chemical: diethylenetriaminepentaacetate; Chemical: DTPA; Chemical: calcium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Zinc; Chemical: diethylenetriaminepentaacetate; Chemical: DTPA; Chemical: calcium