Proto-Oncogene Proteins c-ret. Proto-Oncogene Protein Ret . Proto-Oncogene Protein c-ret . Receptor Tyrosine Kinase RET . Proto Oncogene Protein Ret . Proto Oncogene Protein c ret . Proto Oncogene Proteins c ret . Proto-Oncogene Proteins, ret . Ret, Proto-Oncogene Protein . c-ret, Proto-Oncogene Protein . c-ret, Proto-Oncogene Proteins . ret Proto Oncogene Proteins . c-ret Protein . ret Proto-Oncogene Proteins . 0.75