<s>
11C-UCB-J	B-Algorithm
is	O
a	O
PET	B-Algorithm
tracer	I-Algorithm
for	O
imaging	O
the	O
synaptic	O
vesicle	O
glycoprotein	O
2A	O
in	O
the	O
human	O
brain	O
.	O
</s>
<s>
It	O
is	O
used	O
to	O
study	O
the	O
brain	O
changes	O
associated	O
with	O
several	O
diseases	O
including	O
Alzheimer	O
's	O
disease	O
,	O
schizophrenia	B-Application
,	O
and	O
depression	O
.	O
</s>
