In the "meteorite" AL 84001,recovered from Antarctica and traced to an origin on Mars,which of the following,indicating the possibility of life on that planet,has NOT been found?

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The enclosed pockets of carbon dioxide and methane, which were most likely produced by life forms, have not been found in the meteorite ALH84001. The other features mentioned (rounded grains of carbonate minerals, magnetite and sulfide compounds found together in carbonates, and elongated tube-like structures resembling fossilized microorganisms) have been cited as potential indicators of past life on Mars, but the specific combination of carbon dioxide and methane as described has not been reported in this context.

In the "Meteorite" AL 84001,recovered from Antarctica and Traced to an Origin