👉 Daughters' fluid, also known as endometriosis-associated serous fluid or serous endometriosis fluid, is a complex biological substance that plays a significant role in the pathology of endometriosis. It is secreted by endometrial glands that are present outside the uterus, typically on organs such as the ovaries, fallopian tubes, and pelvic lining. This fluid contains various components including water, electrolytes, proteins, and sometimes even blood cells, which can contribute to inflammation and pain associated with endometriosis. The presence of this fluid is indicative of the disease's progression and can be detected through medical tests, aiding in diagnosis and monitoring treatment effectiveness.