The effectiveness of five different enzymes as treatments against Staphylococcus biofilm growth was measured in the presence of antibiotics and alone. Protease was the least effective enzyme in biofilm removal with all antibiotics, and pectinase was the most effective with dicloxacillin and clindamycin. Also, dicloxacillin was the most effective…

A single heartbeat is a complicated process. In Dutch upper secondary biology textbooks this process is illustrated by the classical Wiggers diagram, which usually shows different heart-related quantities, like voltage (ECG), blood pressure, and the heart sounds. It may help students to understand the nature of the Wiggers diagram if they perform…