@bewildered,
Added on Feb. 28, 2011:
Significance of magnetites originating from blood
Besides the two figures mentioned yesterday (
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I found this Wikipedia article
http://en.wikipedia.org/wiki/Magnetite
exhibits magnetites with blood vessel remains articulated to them as marked in this figure:
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Magnetite is Fe3O4. Many Fe & O can be found in a single red blood cell. However, the Fe & O in Martian red blood cell remains have been re-arranged into Fe3O4—magnetite, although the Martian red blood cell remains are still looking like red blood cells. In other words, Martian life has degraded chemically BEYOND recognition while its cells are still recognizable up to this day.
In view of the above, if life is to be found on Mars in an easy way, high-magnification microscopes are needed.