It looks like you’ve shared a portion of a figure legend or description related to a graph showing the dynamics of free T4 and free T3 hormone levels in the blood plasma of young and old female rhesus monkeys with different types of behavior, measured at different times of day. However, the image or the full text seems incomplete.
If you want me to analyze the graph, explain the data, or provide insights on the figure, please upload the full image or provide the complete text. This will help me assist you accurately.
