27362
Linseed mucilage based buccal mucoadhesive gel preparations in combination with chitosan , carbopol 934P , carboxy methylcellulose and polyvinyl pyrrolidone were formulated and the viscosity , gel strength , percentage mucoadhesion and in vitro diffusion of the formulation was evaluated .
 Chemical: carboxy; Chemical: polyvinyl pyrrolidone
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: carboxy, polyvinyl pyrrolidone 
Answer:
 Chemical: carboxy; Chemical: polyvinyl pyrrolidone