caption: The image shows a diagram of the human insulin-like growth factor II, with text written on it. The diagram is composed of a series of interconnected circles, each representing a different factor in the growth factor of insulin. The circles are labeled with the words "human insulin" and "like" in bold, indicating the importance of the factor. The text below the diagram provides further information about the factor, such as its role in regulating insulin levels and its potential for growth.