T cell activation is initiated by an activated B cell.
The B cell presents antigens on its MHC receptors. The T cell recognizes the antigen bound to the MHC. There are other cosignals that fully activate the at cells but the antigen on the MHC receptor on the B cell is where it all starts.
Answer:
Between one-third and one-half of all fertilized eggs never fully implant. A pregnancy is considered to be established only after implantation is complete
Always report to a teacher or supervisor if anything goes wrong in the lab.
Answer:
The answer is C
Explanation:
The answer is C because it can be answered using scientific methods, the scientific method is a good way to test something, and so therefore C is the answer
Hope that helped! Can I also get brainliest? I need a few more to advance, if not thank you anyways and have a nice day!!!
Answer: check you answer on brainly or com website if possible or check it on paper using Rom to show you answer
Explanation:
