a matrix	sysem in witch sth grows or develops
a reservoir	a tank
a wound	an injury
aqueous	containing water
trauma	severe shock caused by an unpleasant experience
gland	an organ that produces a liquid chemicals
retrovirus	a type of virus that causes e.g. AIDS
adenovirus	a type of virus that causes breathing disease
rejection	the act of refusing to accept
terminal	leading to death
enhancement	improvement
incontinence	inability to control the excretion of urine