11195
This could be achieved via three ways as follows : 1 ) by developing compounds that will interact simultaneously to a multitude of receptors with the required agonist / antagonist effect at each target , 2 ) by targeting intracellular signaling cascades where the signals mediated by multiple receptors converge , and / or 3 ) to regulate gene expression in a manner that has effects on signaling by multiple pathways .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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