Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Streptococcus.
A, Group A streptococcus (Streptococcus pyogenes, β-hemolytic streptococcus). B, Group B streptococcus (Streptococcus agalactiae) are indistinguishable from Streptococcus pneumoniae on Gram stain. Both form long chains containing multiple bacteria.
