Illustration of Peyer's patches, masses of lymphoid tissue in the wall of the small intestine. Peyer's patches are part of the immune system and act as the first line of defence in the small intestine. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / NEMES LASZLO |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |