Negative symptoms take place when there is a lack of a particular response in the system. With regards to our immune system, it is very essential that our body needs to respond against the pathogens attacking our cell. The response would result to the production of antibodies that would help eliminate these threats.
Answer:
the mucous membrane lining the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.
Explanation:
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