Bob Grant | Feb 1, 2010 | 4 min read
By Bob Grant The Path Less Traveled A freshly demonstrated theory on how peptides enter cells sparks ongoing debate. The uptake of fluorescein-labeled peptides into cells via endocytosis at 5 microM peptide (top) and independent of endocytosis at 20 microM peptide (bottom) Courtesy of Roland Brock Describing how peptides and proteins traverse cell membranes is huge in the field of cell biology. Peptides, short chains of amino acids,