The _____ is the bacterial structure that acts as a selective barrier, allowing nutrients to enter the cell and wastes to leave the cell. plasma membrane. nucleoid region. ribosome. pili. cell wall. The structure that regulates the passage of material into and out of this bacterial cell is indicated by the letter _____.
Despite the body of knowledge around it, there was a major uptick in syphilis cases during the 2000s, especially among women ages 20 to 24 and men ages 35 to 39 (CDC). If syphilis goes untreated, the affected person is at risk of developing neurosyphilis.
Secondary syphilis â In this stage, syphilis bacteria spread throughout the body. This usually causes a rash over most of the body along with fever, aches and pains, and other symptoms. This stage begins six to eight weeks after a person is exposed to syphilis, and it lasts up to one year. Latent syphilis â This stage begins when the secondary stage ends. Although there are no symptoms, the person remains infected. This stage can last for many years, even for the rest of a person's life.