>M37812|CD28*01|Homo sapiens|F|EX1| MEHSTFLSGLVLATLLSQ >M37813|CD28*01|Homo sapiens|F|EX2|[D]|V-LIKE| GNKILVKQSPMLVAYDNAVNLSCKYSYNLFS...REFRASLHKGL.DSAVEVCVVYGNYS .QQLQVYSKTG....FNCDGKLGNESVTFYLQNLYVNQTDIYFCKIEVMYPPPYLDNEKS NGTIIHVK >M37814|CD28*01|Homo sapiens|F|EX3| GKHLCPSPLFPGPSKPFWVLVVVGGVLACYSLLVTVAFIIFW >M37815|CD28*01|Homo sapiens|F|EX4| VRSKRSRLLHSDYMNMTPRRPGPTRKHYQPYAPPRDFAAYRS