ðə θɹˈiː tɹænsmˈɛmbɹeɪn ɹᵻsˈɛptɚz tˌiːˌɑːɹkˈeɪ ˈeɪ, tˌiːˌɑːɹkˈeɪ bˈiː, ænd tˌiːˌɑːɹkˈeɪ sˈiː ɛŋkˈoʊdᵻd baɪ ðə dʒˈiːnz ˌɛntˌiːˌɑːɹkˈeɪ wˈʌn, ˌɛntˌiːˌɑːɹkˈeɪ tˈuː, ænd ˌɛntˌiːˌɑːɹkˈeɪ θɹˈiː ɹᵻspˈɛktɪvli mˌeɪk ˌʌp ðə tˌiːˌɑːɹkˈeɪ ɹᵻsˈɛptɚ fˈæmɪli.
The three transmembrane receptors TrkA, TrkB, and TrkC (encoded by the genes NTRK1, NTRK2, and NTRK3 respectively) make up the Trk receptor family.