Severity: Warning
Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 1034
Function: getPubMedXML
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3152
Function: GetPubMedArticleOutput_2016
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
Engineered PEG-cleavable catiomers based on poly-L-lysine have been developed as nonviral gene vectors, which have been found to be one of important methods to balance "PEG dilemma." In this protocol, we aim at the standardization of the method and procedure of PEG-cleavable catiomers. Major steps including ring-opening polymerization (ROP) of ε-benzyloxycarbonyl-L-lysine N-carboxyanhydride (zLL-NCA) monomers to yield PEG-cleavable polylysine, examination on bio-stability and bio-efficacy of its gene complexes are described.
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Source |
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http://dx.doi.org/10.1007/978-1-4939-3112-5_5 | DOI Listing |
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