Immune stimulatory effect of Nigella sativa in healthy animal models: A systematic review and meta-analysis oleh Abdulsamad Alsalahi, Nian N.N. Maarof, Mohammed A. Alshawsh, Musheer A. Aljaberi, Mousa A. Qasem, Abdulaleem Mahuob, Nassrin A. Badroon, Ebthag A.M. Mussa, Rukman A. Hamat, Atiyah M. Abdallah