Department of Physics, Federal University of Paraná, 81531−980 Curitiba, PR, Brazil ...

owing to the ageing-associated rise in Gram-negative bacteria in the blood, and this change was accompanied by the presence of the microbial molecule ADP-heptose in the bloodstream (Fig.

That ‘pop’, better than the one from squeezing bubble wrap, results from the synovial fluid between your joints releasing a small bubble of nitrogen ... Chemical fertiliser (over 82% of it is ...