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POST /entrez/query.fcgi?CMD=Pager&DB=PubMed HTTP/1.1
Referer: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?CMD=Search&DB=P
+ubMed
...
Cookie: LB-Hint-PubMed=0SlUKGwUky2Rn3_3B5G; WebEnv=09ZSqwvMGrYSnbQNfTt
+bZquWN8EWwljKW624FLtMbtqQuh4E9eSM5k

WebEnv=09ZSqwvMGrYSnbQNfTtbZquWN8EWwljKW624FLtMbtqQuh4E9eSM5k&db=PubMe
+d&orig_db=PubMed&term=box&cmd=&cmd_current=&query_key=4&dopt=DocSum&d
+ispmax=20&sort=&SendTo=Text&textpage=1&inputpage=2&CrntRpt=DocSum&sho
+wndispmax=20&page=0&dopt1=DocSum&dispmax1=20&sort1=&SendTo1=Text&text
+page1=1&inputpage1=

HTTP/1.1 200 OK
Date: Mon, 30 Jun 2003 06:59:19 GMT
...
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked

WebEnv= <---Same as what's in your cookie, changes every time
db=PubMed
...
SendTo1=Text
textpage1= <---Always seems to be the same as textpage
inputpage1=