Complex sentence: He specializes in the treatment of traumatic brain injuries (TBI), and his research also included designing camouflage using skin cells of cuttlefish and using a cotton candy machine to make dressing for wounds.
Split into simpler sentences: He specializes in the treatment of traumatic brain injuries (TBI). Other research of Parker's includes designing camouflage using skin cells of cuttlefish and the use of a cotton candy machine to make dressing for wounds.