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Quality of the embryo This, in turn, depends on the quality of the sperm and egg. A good sperm and egg make a good embryo. If the sperm has a poor motility or a poor morphology, it will not yield a good embryo. Similarly, the egg needs to be of a good quality. As the age of the woman increases the quality of eggs starts coming down. If AMH is low indicating a failing ovary the egg quality is poor. The quality of the embryo also depends on the lab conditions. If the air In the laboratory or incubator has a poor quality (ie high VOCs, high particulate count in air) or the temperature and humidity are not optimum the growth of embryo will not occur in a proper way leading to slow division of cells and fragmentation. The media in which embryos are grown is also vital as it determines the immediate pH and temperature, besides providing nutrition for the growth of the embryo. The quality of embryo also depends on the skills of embryologist. The embryologist should be skilled to do procedures fast so as not to expose the embryo to outside air.
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