Definition: Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.
Input: Which is the or no make that what is the receptor that killer T cells use to bind to specific antigens that are complexed with the MHC 1 class receptor of another cell?

What is the receptor that killer T cells use to bind to specific antigens that are complexed with the MHC Class 1 receptor of another cell?