Write an assignment (histamine receptors) of at least three pages and no more th

Write an assignment (histamine receptors) of at least three pages and no more than five pages (not including the cover and references pages in 1.5 line spacing) with updated references. Include the following:
1- first should be a introduction about ( histamine receptor ) with literature review
2-Types of receptors, including mechanisms
3- Synthesis and metabolism
4- Diseases and treatment – Put some paragraph to clarify some points – plagiarism should be 20%