1168
Using lacZ - inducible T cells as a probe , we screened a splenic cDNA library in transiently transfected antigen - presenting cells ( APCs ) and isolated a cDNA clone that allowed expression of the appropriate peptide / Kb MHC complex in APC .
 GENE: lacZ; GENE: peptide / Kb MHC complex
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: lacZ; GENE: peptide / Kb MHC complex