Nematode control failure due to anthelmintic resistance in a sheep farm in Malaysia: First identification of the f200y mutation in the isotype 1 β-tubulin gene by Khadijah, S., Wahaf, A.N.S., Syahmi, M.I., Tan, Tiong Kai, Low, Van Lun, Azrul, Lokman Mohd, Chong, Ju Lian, Lim, Yvonne Ai Lian, Abdullah, C.I.