Extraembryonic tissuesIntrauterine tissues that support the embryo's placenta, umbilical cord, and amniotic sac.
extranuclear genesGenes residing elsewhere than in the nucleus (e.g. in mitochondria, chloroplasts or plastids).
exudeSlowly discharge liquid material (such as tannins or oxidized polyphenols from plant material) through pores or cuts, or by diffusion into the medium.