Hussien, S. A. ., & Doosh, K. S. . (2021). PRODUCTION AND CHARACTERIZATION OF Β-GALACTOSIDASE ENZYME IN THE PLANT EXTRACT FROM (ZIZIPHUS SPINA-CHRISTI) AND ITS APPLICATION IN MILK. Journal of Life Science and Applied Research, 2(1), 1–9. https://doi.org/10.59807/jlsar.v2i1.20