This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Which of the following is true regarding lattice formation? 
Select and explain. 
A. Associated with precipitation and not agglutination, B. Associated with agglutination and not precipitation, C. Associated with both, D. Neither associated with precipitation nor agglutination
C: Associated with both
Answer: C: Associated with both 
Explanation: Marrack proposed the lattice hypothesis to explain the mechanism of precipitation. Precipitation results when a large lattice is formed consisting of alternating antigen and antibody molecules. This is possible only in the zone of equivalence. The lattice hypothesis holds good for agglutination also.Ref: Ananthanarayan 9th edition, p105