The oviduct plays a crucial role in fertilization and early embryo development, providing the perfect conditions for these processes to occur. Researchers have been studying how the oviduct supports natural fertilization and embryo growth by looking at its cellular and molecular functions. They've found that the oviductal fluid, the environment inside the oviduct, contains essential nutrients that protect the embryos. This research also compares how embryos develop naturally versus those created using assisted reproductive technology (ART). By understanding these differences, scientists can improve ART methods for better outcomes in fertility treatments.