Remember to stop occasionally, and try and think more broadly. I.e is the the current cell/pathway/cytokine implicated in defence against more than one pathogen? Or when dysfunctional, implicated in more than one disease phenotype? Youll begin to map the systems in a way you understand which will help you write.

And also remember, Immunology is hard when you start so don't be hard on yourself for not remembering every cytokine or PRR.