👉 A desmosome is a type of biological system that involves a single cell or molecule, such as a virus, bacteria, or parasite, that replicates and divides its own genome within a host organism. This means that it can only replicate itself and not infect other cells or organisms. Desmosomes are important for the survival and reproduction of some viruses and bacteria, but they also play a crucial role in the immune response to certain pathogens.