blotting

in biotechnology
https://doi.org/10.1351/goldbook.B00686
A technique used for transferring DNA, RNA or protein from gels to a suitable binding matrix, such as nitrocellulose or Nylon paper, while maintaining the same physical separation.
Source:
PAC, 1992, 64, 143. 'Glossary for chemists of terms used in biotechnology (IUPAC Recommendations 1992)' on page 148 (https://doi.org/10.1351/pac199264010143)