[corpus callosum]

to diagnose schizophrenia 2 or more of the followings should be present for at least 6 months:
The Phrase is HD N CD and it means "HD= High Definition ,N=& ,CD=Cd"

H: hallucinations
D: delusions

N: Negative symptoms (flat affect, social withdrawal, poverty of speech)

C: catatonic or grossly disorganized behavior
D: Disorganized speech

Good luck!!