In vitro test tubes

"In vitro tubes" refer to laboratory vessels or test tubes in which experiments or research are conducted outside the living organism, meaning "in glass" (from the Latin in vitro). In the context of in vitro fertilization (IVF) for infertility treatment, these tubes are essential for the fusion of an egg with a sperm and the incubation of the embryo under controlled laboratory conditions. They are used to store and work with various biological materials, such as body fluids, cells, or prepared blood samples, which are subjected to further testing or processing during the treatment process.