In vitro experiment in vitro is a Latin phrase meaning 'in glass.' Natural killer (NK) cells - immune cells that release toxic chemicals to help destroy foreign invaders Observational study - a human research study in which no experimental intervention or treatment is applied, and participants are simply observed over time Oxidative damage - damage caused to large molecules (i.e., carbohydrates, protein, fat, DNA) by the presence of reactive oxygen species Oxidative stress - a situation in which the production of reactive oxygen species exceeds the ability of an organism to eliminate or neutralize them Pathogen - a disease-causing organism Phagocytes - immune cells that engulf and destroy foreign invaders Placebo - a chemically inactive substance Proliferation - an increase in the number or amount of something Randomized controlled trial - a human research study in which participants are assigned by chance alone to receive either an experimental agent (the treatment group) or a placebo (the control group) Reactive oxygen species (ROS) - highly unstable oxygen-containing compounds that react easily with nearby cellular structures, potentially causing damage T lymphocytes (T cells) - immune cells that detect specific pathogens and coordinate an immune response Authors and Reviewers Originally written in March 2016 by: Giana Angelo, Ph.D

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DOI:10.3389/fphar.2017.00904.
However, these studies are limited in scope, and larger, long-term, placebo-controlled trials are required to fully understand the efficacy and safety of IVNT for neurodegenerative diseases It is essential to consider that IVNT carries risks, such as local irritation, infection, and allergic reactions
Oral supplementation research: The peptide fragments are degraded by digestive enzymes
Li, S., Yang, Y., Shi, M