Dear Chris,
Thank you for your questions about our Aptamer Libraries. NeoVentures Biotechnology analyzed a TriLink library to show the randomness of the library by enzymatic digest and by sequencing.
The pSNAPf Vector from New England Biolabs contains both a NdeI site and an SpeI site. Alternatively, a PCR fragment amplified with Taq polymerase will have TA ends that can be cloned into aTOPO® TA vector from Life Technologies.
Best regards,
Elizabeth