NEGATIVE staining has become widely accepted as a means of visualizing macromolecular structures under the electron microscope 1,2. Its advantages lie in its simplicity and the high contrast which it ...

Ileal pouch–anal anastomosis is the definitive therapy for ulcerative colitis that is refractory to medical treatment or that has developed neoplasia. Patients with this procedure are routinely ...

Researchers at TU Graz have proven that espresso is a favourable alternative to the highly toxic and radioactive uranyl acetate in the analysis of biological samples.