Which of the following immunoglobulin is responsible for opsonisation -

The unique structural features of IgM appear paicularly suited to the biological role of providing protection against microorganism and other large antigens that have repeating antigenic determinants on their surface. - IgM is also 500-1000 times more effective than IgG in opsonization, 100 times more effective in bactericidal action and about 20 times in bacterial agglutination. Reference : Anathanarayan & paniker's 9th edition, pg no:98 <\p>