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.
1 The pain and rash occur near an eye. If left untreated, this infection can lead to permanent eye damage. 2  You're 70 or older, because age significantly increases your risk of complications.  You or someone in your family has a weakened immune system (due to cancer, medications or chronic illness).