Physiological, biochemical, apoptosis-linked gene expression, and histopathological insights in Nile catfish subjected to toxicity by magnetite nanogel. - Mahmoud YK; Ahmed SAA; Mahboub HH; Abdelwarith AA; Younis EM; Elnegiry AA; Shawky SM; Orabi SH; Ismail SH; Davies SJ; Darwish MIM (Fish physiology and biochemistry, 2025)