Fix grammatical errors in this sentence: One similarity of smallpox vaccine and penicillin is that they are life-saving discoveries in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a life-saving discovery in medicine.
The vaccine is a
The vaccine was developed by the British pharmaceutical company Pfizer and the American pharmaceutical company Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The vaccine was developed by Pfizer and Merck & Co.
The