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The birefringence pattern from polarized light microscopy from a 1-day-old contracting FF-FPCL that shows the birefringence pattern from parallel aligned collagen fibers localized at the ends of an elongated fibroblast. With polarized light microscopy, minimal cellular morphology is achieved. Fibroblasts translocate collagen fibrils by passing them over their plasma membrane surface, aligning them in parallel arrays. Magnification 80×.
