| http://www.w3.org/ns/prov#value | - Nucleoside triphosphates and 2???-deoxynucleoside triphosphates or their chemically modified versions may be used as substrates for multiple-nucleotide extension by PAP, i.e., when one nucleotide is incorporated the extending strand can be further extended. 2???,3???-dideoxynucleoside triphosphates, their chemically modified versions, acyclonucleotides or other blocked nucleotides which are termin
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