Many medieval cathedrals included gargoyles and chimeras. An example of artificial chimerism in animals are the quail-chick chimeras. Cells in each fetus carry chromosomes from either sperm, resulting in chimeras. Animal chimeras are produced by the merger of multiple fertilized eggs. These gods are depicted as human-snake chimeras. Naming of humanized chimeras includes the stem for both designations ("-xi-" + "-zu-"). These are chimeras in which the layers differ in their chromosome constitution. However, it is feasible that human-compatible organs for transplantation could be grown in these chimeras. The black magicians used magical spells to breed human-animal chimeras. Untransformed cells should be easy to detect and remove to avoid chimeras. The company's products are aimed at fantasy fans, including dragons, horses, orcas, chimeras, and werewolves. The distinction between sectorial, mericlinal and periclinal plant chimeras are widely used. Lycia Therapeutics focuses on developing technology which utilizes lysosome-targeting chimeras (LYTACs). To combat the Chimeras, the "Neuron" Police Task Force is employed. The ability to make mouse chimeras comes from an understanding of early mouse development.