0 a hard substance in the outer shell of insects and animals such as shrimp and lobster, and in the cell walls of some fungi -- 壳质（某些生物体表坚硬的保护层，如昆虫、虾，龙虾的外壳和部分真菌的细胞壁）
The protein elements may be derived from reticulate granules and chitin from the glycogen reserves of the oocyte.
Alvinellids make complex chitin tube colonies on the flanks of black smoker chimneys.
Within marine chitin-containing organisms, the -type is abundant and chitosan can also be found.
Each lamella was generated by the deposition of parallel sheets or laminae of chitin microfibrils.
The residual antifungal activity of the inactive mutant forms might be due to their ability to bind chitin.
Body-wall with one bilateral pair of incisions, each surrounded by a circular patch of dark chitin.
The pogonophorans produce tubes that consist of protein and chitin.
The change in appearance of the developing shell layers as they became more fibrillar may reflect the formation of chitin-protein complexes.
