The term cytotoxic t cell is identified in base64 scheme by the sequence Y3l0b3RveGljIHQgY2VsbA==, while the MD5 signature is equal to 5ad9d2e520c4967b6be8633f56850164. The ASCII encoding of cytotoxic t cell in hexadecimal notation is 6379746f746f78696320742063656c6c.