IgM is the first antibody produced in response to an infection, playing a vital role in the primary immune response. It is large in size, allowing it to form pentamers that enhance pathogen neutralization. IgG, the most abundant antibody, follows IgM and provides long-term immunity.
Which of the following microbes is NOT involved in the preparation of household products?
A. \(\textit{Aspergillus niger}\)
B. \(\textit{Lactobacillus}\)
C. \(\textit{Trichoderma polysporum}\)
D. \(\textit{Saccharomyces cerevisiae}\)
E. \(\textit{Propionibacterium sharmanii}\)