Crystalloid structures in the neuronal nuclei of the cerebral cortex of rats following total ischaemia.
The study was concerned with the nuclei of neurons derived from the cerebral cortex of rats that underwent experimental cardiac arrest for a duration of 10 minutes and then, after reanimation, survived from 2 weeks up to 10 months. The animals were divided into two groups: in the first-those specimens that survived from 2 to 6 weeks; in the second-those that survived 8 weeks to 10 months. In the specimens obtained from the first group we observed irregular vesicular structures and bundles of parallel fibrils 8 nm in diameter. In the second group we often observed paracrystalline form resembling "plaited ropes" and tubulous structures linked by a microfibrillar netting. These structures were analysed withAlthough our travels have taken us to historic places in Boston, Philadelphia and Washington, DC, our English-speaking history on this continent goes back farther. Back 408 years, in fact, to the first permanent English-speaking colony of Jamestown, Virginia.

In 1607, 3 ships bringing men and boys arrived and landed in what is now Virginia and established James Fort, which expanded and became Jamestowne, named in honor of the British monarch. Over the next two years, more ships would arrive bringing more men and even women and children.

By the winter of 1609-1610, there were 500 people living there. Unfortunately, that was the winter known as "The Starving Time," an extremely difficult time to get food due to both a drought and hostilities with the Native Americans. The population went from