in vitro fertilization reciprocal in vitro fertilization An assisted reproductive technique involving two individuals who produce oocytes. The method uses in vitro fertilization (IVF), a method that means eggs are removed from the ovaries, fertilized in a laboratory, and then one or more of the resulting embryos are placed in the uterus to hopefully create a pregnancy. Reciprocal IVF differs from standard IVF in that two partners are involved: the eggs are taken from one partner, and the other partner carries the pregnancy. co-in vitro fertilization in vitro fertilization with reception of oocytes from the partner partner in vitro fertilization reciprocal IVF reciprocal in vitro fertilisation