Chemical fixation: This method is used for stabilizing biological samples. Chemical substances are applied tocross connection protein molecules with close by molecules. The most often used chemical in this method is glutaraldehyde.Không b? ?nh h??ng b?i các tác ??ng c?a môi tr??ng, b?t k? ?i?u ki?n th?i ti?t có ?? ?m cao, l?nh hay nhi?t ?? cao