Several methods are used to collect tissue samples, depending on the type of tissue and the purpose of the study:
Biopsy: This is the most common method, where a small piece of tissue is surgically removed from a living organism. Types of biopsies include needle, excisional, and incisional biopsies. Surgical Resection: Larger tissue samples are obtained during surgical procedures, often used for studying tumors and other large lesions. Endoscopic Collection: Tissues from internal organs can be collected using an endoscope, a flexible tube with a camera and tools. Autopsy: Post-mortem tissue collection helps in understanding the cause of death and studying diseases.