Name Info Provider Link
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=18060527.ui
subscription/membership/fee required Springer https://link.springer.com/article/10.1007/s00726-007-0002-9
free resource NCI CPTAC Assay Portal https://assays.cancer.gov/CPTAC-377