Psoriasis. Light micrograph of a section through a psoriasis pustule. Psoriasis is a chronic skin disease causing inflammation and scaly lesions. In this section the surface of the skin (stratum corneum) is at top. There is a parakeratotic layer with abnormal keratinisation and microabcesses (upper centre) immediately below the cornified layer. Beneath this,the stratum spinosum layer of the epidermis is greatly thickened (acanthosis). This is a major feature of psoriasis. The rete pegs (sections of epidermis that protrude into the dermis) and dermal papillae (sections of dermis that protrude into the epidermis) are elongated and pronounced | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / CNRI |
Bildgröße: | 5551 px × 3817 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |