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SARS is not a pathogen, it is an syndrome similar to AIDS. It is caused by a virus called coronavirus, but it is the mutated strain.
A very important characteristic about bacteria actually created live S-strain to exist in the dead injected mouse. Bacteria is competent, in biological terms, meaning that cells can take up "naked" DNA from it's environment. Knowing that fact, when the heat-killed S-strain pneumoccus mixed with the live R-strain, the R-strain took in the DNA, therefore inheriting the deadly coating of the S-strain. So the R became S, and killed the mouse.
DNA
C. the mice died because rough strain bacteria had been transformed to the smooth strain
t He then took the R strain (rough strain) and injected it into the mice and found that they did not contract the pneumonia illness and survived the insertion of the strain
MRSA is not a disease, it stands for "Methicilin-resistant Staphylococcus aureus", so it's a strain of S.aureus.
A. Dna
Pneumonia is a medical illness (an infection of the lungs) caused by a variety of pathogens (bacteria, viruses, fungi). Pneumococcus (full name Streptococcus Pneumoniae) is a bacteria and a common cause of pneumonia. Therefore vaccination against Pneumococcus will prevent some, but not all pneumonias.
The disease-causing strain of bacteria grew into smooth colonies on culture plates, whereas the harmless strain produced with rough edges.
he discovered pneumococcus
Benjamin White has written: 'The biology of pneumococcus' -- subject- s -: Accessible book, Bibliography, Immunity, Pneumococcus, Streptococcus pneumoniae
Pneumococcus pneumonie