In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 Intrathecal injections of small volumes of the alpha 2 - adrenoceptor agonists , xylazine and clonidine , into the cervical region of the spinal cord of conscious unrestrained sheep produced a dose - dependent analgesia of the forelimbs as measured using a mechanical pressure device .
alpha 2

 Northern blot analysis confirmed that ADAMTS - 1 was up - regulated in both metaphyseal ( 14 - to 35 - fold ) and diaphyseal ( 4 . 2 - fold ) bone 1 h after PTH - ( 1 - 38 ) injection and returned to control levels by 24 h .
ADAMTS - 1

 When expressed in Escherichia coli , SH - PTP2 displays tyrosine - specific phosphatase activity .

SH - PTP2