APL 1 Aptamers, Nucleotide 1 Article 1 CELL-SELEX 1 Cell Line, Tumor 1 DNA, Single-Stranded 1 HL-60 cell line 1 Humans 1 K-562 cell line 1 Kinetics 1 NB4 cell 1 NB4 cell line 1 Nucleic Acid Conformation 1 SELEX Aptamer Technique 1 aptamer 1 binding affinity 1 chemistry 1 conformation 1 controlled study 1 flow cytometry 1 fluorescein isothiocyanate 1 fluorescence intensity 1 fluorescence microscopy 1 human 1 kinetics 1 leukemia 1 metabolism 1 protein secondary structure 1 sequence analysis 1 single stranded DNA 1