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Fig. 2 Assembling stereotaxic injector: ( A ) stereotaxic injector for bilateral injec-
tion. A double internal injector ( 1 ) is held by a double guide cannula ( 2 ) that is
mounted on a stereotaxic apparatus via a cannula holder ( 3 ). The internal injector
is connected to Hamilton syringe ( 5 ) with PE50 tubing ( 4 ). The Hamilton syringes
are controlled by a syringe injection pump ( 6 ). (a) Enlarged picture for the injector
assembling [ white box in picture ( A )]. 2: Single and double guide cannulas used
for hold internal injector. ( B ) Alternative assembling stereotaxic injector for uni-
lateral injection. A microsyringe pump ( 7 ) with a Hamilton syringe ( 5 ) is mounted
on stereotaxic apparatus. The microsyringe pump is controlled by a four-channel
microcontroller ( 8 ) (World Precision Instruments, Sarasota, FL)
Injection of Recombinant Adenovirus into Specifi c Brain Regions
An animal is anesthetized and placed on a stereotaxic apparatus. After
an incision, the tip of injector (one of the injectors for bilateral injec-
tion) is aligned with bregma and all of the coordinates are rezeroed.
(continued)
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