Apostrophe placement..

He had 3 courses’ of chemo-radiation and was felt to be free of disease after completion of that treatment. He had moderate neutropenia and anemia afterward’s. He was referred for follow up radiation therapy and has been receiving this approximately 6 months’. Because of concern about respiratory problems, belomycin was discontinued from the protocol after several dose’s.

All of those apostrophes are wrong.

http://www.grammarbook.com/punctuation/apostro.asp

There is/are positive bowel sounds.

The placement of apostrophes in the paragraph you provided is incorrect. Apostrophes are primarily used for two purposes: to indicate possession and to indicate contraction. Let's go through the paragraph and correct the apostrophe placement.

Corrected version:

He had 3 courses of chemo-radiation and was felt to be free of disease after completion of that treatment. He had moderate neutropenia and anemia afterwards. He was referred for follow-up radiation therapy and has been receiving this for approximately 6 months. Because of concern about respiratory problems, belomycin was discontinued from the protocol after several doses.

Explanation:

1. Apostrophe indicating possession: In the original paragraph, there are multiple instances where the apostrophe is incorrectly placed before the "s" in words that are not possessive. For example, "3 courses’" should be corrected to "3 courses," as there is no possession involved.

2. Apostrophe indicating contraction: The incorrect use of apostrophes is also seen in "afterward’s" and "dose’s." In these cases, the apostrophes should be removed, and the words should be written in their correct form: "afterwards" and "doses" without the apostrophe.

Remember, apostrophes are essential for clear and accurate writing. Proper apostrophe placement helps avoid confusion and ensures that your message is conveyed correctly.