| 1. | It consists mainly of two proteins, fibroin and sericin.
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| 2. | Sericin has also been used in medicine and cosmetics.
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| 3. | The cocoons are first boiled to loosen the sericin holding the filaments together and remove the silkworm.
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| 4. | Sericin C also contains the amino acids present in B, along with the addition of proline.
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| 5. | Sericin C is the innermost layer, the layer that comes closest to and is adjacent to fibroin.
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| 6. | They spin their cocoon around themselves by extruding liquid silk that's covered with a tacky sealant called sericin.
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| 7. | There are also three different types of sericin, which make up the layers found on top of the fibrin.
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| 8. | Sericin B, composed the middle layer and is nearly the same as sericin A, but also contains tryptophan.
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| 9. | Sericin B, composed the middle layer and is nearly the same as sericin A, but also contains tryptophan.
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| 10. | Liquid silk is coated in sericin, a water-soluble protective gum, and solidifies on contact with the air.
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