The presence of (cocci/diplococci/coccobacilli/streptococci) in the CSF is consistent with infection with Listeria monocytogenes. (Describe the appearance of the cells.)
To describe the appearance of bacterial cells, we typically refer to their shape and arrangement. Let's break down the options you provided:
1. Cocci: This term refers to bacteria that are round in shape, appearing as individual cells. They can appear either singly or in clusters.
2. Diplococci: Diplococci are a specific type of cocci that appear in pairs, meaning two cocci are attached to each other.
3. Coccobacilli: This term refers to bacteria that have an intermediate shape between cocci (round) and bacilli (rod-shaped). They are oval and can appear individually or in pairs.
4. Streptococci: Streptococci are cocci bacteria that arrange themselves in chains, where multiple cocci are attached together in a linear fashion.
In the case of Listeria monocytogenes, it typically appears as short, gram-positive rods. Therefore, it would be more appropriate to describe the appearance of Listeria monocytogenes as coccobacilli or rods rather than cocci or diplococci.
Please note that the appearance of bacterial cells can sometimes vary, and laboratory techniques such as staining might be required to accurately identify the specific bacteria.