Listen to the sentences and complete them with the correct word or words (there will be between 1 and 4 missing).
Spelling is important both in the OET and in your working lives, and this exercise will help you to improve.

The patient’s serum cholesterol levels were elevated, indicating a risk for heart disease.
The release of histamine causes inflammation in response to allergens.
Insulin therapy is used to control blood sugar levels in patients with diabetes.
Early screening can detect cancerous cells before they spread.
The athlete suffered a severe head injury during the game.
The medication will inhibit the growth of bacteria in the body.
The initial diagnosis was pneumonia, but further tests revealed tuberculosis.
The surgeon used a minimally invasive technique to repair the hernia.
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