Okay, the user wants me to translate "resident macrophages" into Thai. Let me check if the term is already in Thai. Since it's an English term related to biology, I need to translate it properly.
First, "resident" in this context refers to macrophages that are permanently located in a specific tissue. In Thai, "resident" can be translated as "ที่อยู่อาศัย" or "ถาวร" depending on the context. However, in scientific terminology, "resident macrophages" are commonly known as "มาโครฟาจถาวร" in Thai medical literature.
I should confirm if there's a standard translation for this term. A quick check shows that "มาโครฟาจถาวร" is the accepted term. So the translation would be "มาโครฟาจถาวร".
Also, the user specified to output only the translation without any explanations. So I need to make sure my response is just the Thai term without any additional text.