Basic Composition of a Biomedical Research Paper
The basic format of a biomedical research paper (sometimes called the IMRAD format) is: title, abstract, Introduction, Materials and methods, Results, And Discussion, and references.
However, some journals follow a different order. For example, in Nature the methods are placed at the end of the paper. If you have a target journal in mind, get a copy of a few articles from that journal. Check the order of the article, also check the length of each section.
A rough guide might be:
|Materials and Methods:||3 pages|
|Discussion:||3 to 4 pages|
Keep this in mind as you write.
Order of writing a paper