hypersensitivity to a substance that is usually harmless
process by which cells become specialised to perform a specific function.
a serious and potentially fatal medical state caused by an allergic reaction, in which sufferers...
the splitting of water molecules into oxygen atoms and energy-rich hydrogen atoms to be used in...
tissue that makes up the majority of the plant body and performs various functions.
a v-shaped extension of the mammalian soft palate, which closes the opening to the nasal...