پوسته
preferred label: shell @en
type: Concept
related: آزمون

آزمون
related: بی‌مهرگان
related: کیتین
related: پوسته
preferred label: test @en
type: Concept

بی‌مهرگان
preferred label: invertebrata @en
type: Concept
related: آزمون

کیتین
preferred label: chitin @en
type: Concept
related: آزمون