In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Example Input:  A clinically acceptable synthetic derivative of MDP , namely murabutide ( MB ) , has been found to present interesting pharmacological properties and to suppress HIV - 1 replication in monocyte - derived macrophages ( MDM ) .
Example Output: HIV - 1

Example Input:  The number of binding sites was not significantly modified .
Example Output: binding sites

Example Input:  The above reactions suggest that a large proportion of breast cancer patients exhibit presensitization to antigenfs found in MuMTV and MCF - 7 , which may be cross - reactive with antigens in the primary cancer .
Example Output:
MCF - 7