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Additional genetic analyses described herein suggest that Skb1 is a component of the morphology control branch of the Ras signaling cascade in S . pombe and that it positively modulates Shk1 function .
 GENE: Skb1; GENE: Ras; GENE: Shk1
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: Skb1; GENE: Ras; GENE: Shk1