This paper generalizes the definition of a Heegaard splitting to unify the concepts of thin position for 3-manifolds [15], thin position for knots [2], and normal and almost normal surface theory [3], [13]. This gives generalizations of theorems of Scharlemann, Thompson, Rubinstein, and Stocking. In the final section, we use this machinery to produce an algorithm to determine the bridge number ...

Freeze fracture and thin section techniques have revealed morphological changes in gap junctions and intercalated discs of adult rat myocytes following enzymatic dissociation. Cell separation leaves behind small vesicular remnants of formerly adjacent cells connected to the intact cell by gap junctions; in contrast, desmosomes cleave at the region of intercellular contact. Apparently, the next ...

To evaluate the progression of native lung fibrosis on thin-section computed tomography (CT) scans from patients with IPF after SLT, we retrospectively studied thin-section CT findings of the patients who survived more than 3 years. Three radiologists independently reviewed serial CT images from 12 patients who underwent SLT for IPF. Initial CT scans were performed up to 7 months before SLT or ...