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Thanks, but I don't think you can buy agar in the high street, may be wrong(?)
agar does not include gelatine ... https://en.wikipedia.org/wiki/Nutrient_agar [nofollow]BTWCultivating micro-organisms is potentially hazardous to your health as you could be growing something pathogenic.
... if you already have it, it is probably not going to get you that sick.
It is estimated that 20% of the human population are long-term carriers of S. aureus which can be found as part of the normal skin flora and in anterior nares of the nasal passages.
Staphylococcus aureus is a major cause of bacteremia, and S. aureus bacteremia is associated with higher morbidity and mortality, compared with bacteremia caused by other pathogens.
For example, Staphylococcus or Streptococcus are also part of the normal human flora and usually exist on the skin or in the nose without causing disease, but can potentially cause skin infections, pneumonia, meningitis, and even overwhelming sepsis, a systemic inflammatory response producing shock, massive vasodilation and death