Tangled up

Tangled (up in) cubes.

The 'simplest' entanglements of the graph of edges of the cube are enumerated, forming two-cell {6, 3} (hexagonal mesh) complexes on the genus-one two-dimensional torus. Five chiral pairs of knotted graphs are found. The examples contain non-trivial knotted and/or linked subgraphs [(2, 2), (2, 4) torus links and (3, 2), (4, 3) torus knots].

Tangled Up In Blue

Thrombosis: tangled up in NETs.

The contributions by blood cells to pathological venous thrombosis were only recently appreciated. Both platelets and neutrophils are now recognized as crucial for thrombus initiation and progression. Here we review the most recent findings regarding the role of neutrophil extracellular traps (NETs) in thrombosis. We describe the biological process of NET formation (NETosis) and how the extrace...

Tangled

A 4-year-old girl presented with 1-year history of fatigue, early satiety, intermittent vomiting, alopecia, pallor, and weight loss without changes in bowel habits or overt gastrointestinal bleeding. Examination revealed thin hair, pale conjunctivae, and mu-cous membranes. Tachycardia and a systolic flow murmur (grade II/VI) were present. Abdomen was nontender, distended, and tympanitic, with h...

Tangled banks

Darwin chose the metaphor of 'tangled bank' to conclude the Origin of Species. Two centuries after Darwin's birth, " we are still untangling the complex ecological networks he has pondered, " writes Andy Dobson of Princeton University and colleagues, in a series of papers in the Philosophical Transactions of the Royal Society B (published online) focused on food webs. Food webs represent one of...