This other one, within a multinucleated giant cell, has 3 heads, due to fusion at right angles of the asbestos fibers of its nucleus.
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Other FBs within macrophages
Other asbestos fibers are covered by a thin layer of ferroproteins, which fragments into the shape of beads on an abacus.
Typical gym dumbbell FBs are common, with a thinner bar and thickening at the ends.
Asbestos fibers without ferroprotein coating can be seen inside macrophages (arrows)
Other asbestos fibers appear to be free.
Some asbestos fibers are very thick #asbestos
Others are thin and very short.
They can be L-hook-shaped, curved or strangely shaped like a crutch or Z.
Those that are shaped like a gym dumbbell can be straight