Histamine crystals
Numéro d’image : 11521088
| Histamine. Polarised light micrograph of crystals of the chemical histamine. Histamine is derived from the amino acid histidine,and is mainly associated with the mast cells found in connective tissue. It is one of the chemicals involved in inflammation,causing dilation and increased permeability of small blood vessels. It is released in large quantities after damage to the skin (as in an insect bite),producing a characteristic red wheal and itching. Histamine is also released in and gives rise to the symptoms of a number of allergic conditions,including asthma. Magnification: x200 at 6x7cm size | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Pasieka, Alfred |
| Taille de l’image : | 2974 px × 3612 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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