DOYEN'S OPERATION'S SERUM

\dˈɔ͡ɪənz ˌɒpəɹˈe͡ɪʃənz sˈɛɹəm], \dˈɔ‍ɪənz ˌɒpəɹˈe‍ɪʃənz sˈɛɹəm], \d_ˈɔɪ_ə_n_z ˌɒ_p_ə_ɹ_ˈeɪ_ʃ_ə_n_z s_ˈɛ_ɹ_ə_m]\

Definitions of DOYEN'S OPERATION'S SERUM