16962
We examined a number of anti - resorptive treatments to either block osteoclast activity , including the potent bisphosphonates zoledronic acid ( ZA ) and clodronate ( CLOD ) , which work via differing mechanisms , or antagonize osteoclastogenesis with recombinant OPG ( HuOPG - Fc ) , comparing these directly to an inhibitor of matrix metalloproteinase ( MMP ) activity ( MMI270 ) .
 Chemical: bisphosphonates; Chemical: zoledronic acid; Chemical: clodronate; Chemical: CLOD
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: bisphosphonates; Chemical: zoledronic acid; Chemical: clodronate; Chemical: CLOD