Electrophoresis in Space - 1985, PDF As flow cytometry became the standard method for cell sorting, FFE developments focused on the separation of proteins and charged particles. Some groups are also working on miniaturized versions of FFE systems or micro FFEs.S. Jezierski, L. Gitlin, S. Nagl, D. Belder, Multistep liquid-phase lithography for fast prototyping of microfluidic free-flow-electrophoresis chips, Anal. Bioanal. Chem., 2011, 401, 2651-2656.
