interleukin 17; neodymium; propylene; tumor necrosis factor; apoptosis; coronavirus disease 2019; developmental stage; Down syndrome; electromagnetism; energy dispersive X ray spectroscopy; fractal analysis; geomorphology; hippocampal CA1 region; Human immunodeficiency virus infection; immunotherapy; inflorescence; intestine flora; leukemia; necroptosis; nonhuman; note; phylogeny; RNA sequence; skeletal muscle; smelling; trisomy 21; virus load; virus shedding