Gonococci has affinity for :
**Core Concept**
Gonococci, the causative agent of gonorrhea, exhibit specific tropism and affinity for certain cell types and tissues. This affinity is crucial for their pathogenesis and invasion of the host.
**Why the Correct Answer is Right**
Gonococci have a high affinity for columnar epithelial cells of the mucous membranes, particularly in the cervix, urethra, and pharynx. This affinity is mediated by the bacterial adhesins, such as pili and Opa proteins, which facilitate the attachment and invasion of these cells. The columnar epithelial cells provide a favorable environment for gonococci to adhere, multiply, and evade the host immune response.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because gonococci do not have a significant affinity for squamous epithelial cells, which are more resistant to their adhesion and invasion.
**Option B:** This option is incorrect because while gonococci can infect other mucous membranes, they do not have a specific affinity for the skin.
**Option C:** This option is incorrect because gonococci do not have a significant affinity for the conjunctiva, although they can cause conjunctivitis as a secondary infection.
**Clinical Pearl / High-Yield Fact**
It's essential to note that gonococcal infections can be asymptomatic, particularly in women, and may only present with symptoms such as dysuria or increased vaginal discharge. A high index of suspicion and prompt diagnosis are crucial to prevent complications and transmission.
**Correct Answer: D. Columnar epithelial cells.**