Dense Irregular Connective Tissue

Dense irregular CT are collagen fibers arranged irregularly, unlike dense regular CT.  The result is a tissue type that can withstand tension (pulling) in many directions.  One common location where this can be found is in the dermis of skin.  These collagen fibers are maintained by fibroblasts.

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Skin with emphasis on the dermis (TM: 100x, picture taken with an Olympus DPlan 10/0.25 on Sony NEX6)
Dense Irregular CT staining for collagen fibers (TM: 100x, different slide from above.  Picture taken with a Nikon Planapo 10/0.4 on Sony A7ii)

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