Most of the comments are not answered.
What is the source of mice bone marrow stromal cells and osteoclast progenitors?
Where were the American Type Culture Collection (ATCC) cell lines purchased from? How will you obtain Bacillus subtilis ATCC-6633, Staphylococcus aureus ATCC-6538, Klebsiella pneumonia ATCC-10031, Candida albicansATCC-10231 ?
Secondary objective still needs modification. Hypothesis and rationale are not clear.