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Collagen fibrils and fibers
Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x
![Collagen fibrils <p>Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x </p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Fibers-3-1-ping.png)
Collagen fibrils
Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x
![Collagen fibers <p>Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x </p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Fibers-3-2-ping.png)
Collagen fibers
Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x
![Ground substance <p>Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x </p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Fibers-3-3-ping.png)
Ground substance
Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x
![Peripheral nerve <p>Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x </p>](https://digitalhistology.org/wp-content/uploads/2018/06/T.CT_.CTP_.Fibers-3-4-ping.png)
Peripheral nerve
Fibroblasts secrete tropocollagen molecules that assemble into collagen fibrils, displaying a repeating 64 nm banding pattern. There are numerous types of collagen, the most prevalent being Types I, II, III and IV. Types I, II and III form fibrils; Type IV, a major component of the basal lamina, does not. Type I fibrils further assemble into larger fibers and bundles, which can range from 1 to 20 microns in diameter. A small peripheral nerve is seen surrounded by a large fiber. 14,000x