Expand. PPLO

Answer

To expand the term PPLO, follow these steps:

1. **Identify the Acronym**: The acronym PPLO stands for a specific term in biology. Recognizing that it is an abbreviation is the first step.

2. **Research the Full Form**: The full form of PPLO is "Pleuro Pneumonia Like Organisms." This term is used to describe a group of bacteria.

3. **Contextual Understanding**: Understand that PPLO refers to Mycoplasma, which are known for being the smallest cells. They have a size range of approximately 0.1 to 0.3 mm.

4. **Historical Background**: Note that PPLO was discovered in cattle that were suffering from pleuropneumonia, which helps to contextualize its significance in veterinary medicine.

5. **Summarize the Information**: Finally, summarize the information gathered to provide a clear and concise answer to the question.

### Final Answer:
PPLO stands for "Pleuro Pneumonia Like Organisms," which refers to Mycoplasma, the smallest known cells, with a size range of 0.1 to 0.3 mm, discovered in cattle suffering from pleuropneumonia.