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In contrast , multicellular spheroids mimic heterogeneous cellular behavior and the consequent functional characteristics of in vivo solid tumors , and serve as important in vitro model to investigate tumor biology and responses to potential therapeutic agents .
 Anatomy: multicellular spheroids; Anatomy: cellular; Anatomy: solid tumors; Anatomy: tumor
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: multicellular spheroids, cellular, solid tumors, tumor 
Answer:
 Anatomy: multicellular spheroids; Anatomy: cellular; Anatomy: solid tumors; Anatomy: tumor