Experimental maturation of Archaea encrusted by Fe-phosphates.

Burial is generally detrimental to the preservation of biological signals. It has often been assumed that (bio)mineral-encrusted microorganisms are more resistant to burial-induced degradation than non-encrusted ones over geological timescales. For the present study, we submitted Sulfolobus acidocaldarius experimentally encrusted by amorphous Fe phosphates to constrained temperature conditions (150 °C) under pressure for 1 to 5 days, thereby simulating burial-induced processes.

[Benign isolated 6th nerve paralysis in children. Developmental aspects apropos of 9 new cases].

Benign isolated VI nerve palsy in children is a rare but now well-established clinical entity. The diagnosis is essentially an exclusion one. We report nine additional cases.