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Using amino acid sequence information derived from the DNA affinity-purified protein , we have now isolated cDNA clones encoding TCF-1 alpha .
 protein: TCF-1 alpha; protein: DNA affinity-purified protein; DNA: cDNA clones; protein: amino acid sequence
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: TCF-1 alpha; protein: DNA affinity-purified protein; DNA: cDNA clones; protein: amino acid sequence