Bacterial DNA â a circular chromosome plus plasmids. The DNA of most bacteria is contained in a single circular molecule, called the bacterial chromosome. The chromosome, along with several proteins and RNA molecules, forms an irregularly shaped structure called the nucleoid.
What are the effects? If left untreated, syphilis can eventually cause damage to the brain, nerves, eyes, heart, blood vessels, liver, bones, and joints. In extreme cases it can cause difficulty coordinating muscle movements, paralysis, numbness, gradual blindness, mental illness, and even death. If you have syphilis and are pregnant, it can cause serious birth defects and stillbirth.
Syphilis infection, when untreated, progresses through different clinical stages with characteristic signs and symptoms. After the first infection, symptoms typically develop at around 21 days after the infection, but they may appear anywhere from 10 to 90 days following infection. Primary syphilis.