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A two-part diagram illustrating immune sensitization and allergic reaction. The left side shows initial allergen exposure, dendritic cell capture, T-cell activation, B-cell binding, and IgE production. The right side depicts re-exposure, allergen binding to mast cells, activation, release of signaling molecules, and subsequent blood vessel changes and muscle constriction.

Allergene dringen über haut, Schleimhäute und Atemwege in Körper; immunsystem erkennt Allergene; Sensibilisierung ohne symptome; dendritische zellen nehmen allergen auf, verarbeiten sie und präsentieren Bruchstücke an der zelloberfläche; t-zellen erkennen Allergene auf Oberfläche der denritischen zellen; Aktivierung der t-zellen; ein teil entwickelt sich zu t-helferzellen, bei Allergie th2 helferzellen; parallel bindet allergen an Rezeptoren der b-Zellen; Aktivierung der b-zellen; b-zellen nehmen allergen auf, verarbeiten es und präsentieren es an der zelloberfläche; treffen th2 zelle und b zelle aufeinandern binden sie aneinander; th2 zelle setzt botenstoffe frei; b-Zelle produziert ige-antikörper; ige bindet an Oberfläche der mastzellen; Verteilung der zellen über das blut; Körper ist auf allergen sensibilisiert; erneuter kontakt; allergen bindet an ige-antikörper auf mastzelle; mastzelle wird aktiviert und setzt botenstoffe, z.B histamin frei; botenstoffe verursachen entzündungsreaktion; allergische Reaktion; Blutgefäße durchlässiger, glatte Muskulatur zieht sich zusammen; allergische Symptome erstelle ein passendes schaubild/ Abbildung die den verlauf der Entstehung graphisch und mit text (siehe notitzen ) in der passenden Reihenfolge veranschaulich darstellt. machen eine Abbildung für eindringen des Allergens in den Körper mit Sensibilisierung und eine Abbildung mit dem erneuten jontakt und der allergischen Reaktion. nenne keine symptome Mehr sehen

#biology #medical illustration #diagram

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