You can start with a bent-knee plank if you canât perform a regular plank yet. If you can hold a plank for more than two minutes with ease, you can move on to these tougher variations. Practise every day. Space your planking exercise throughout the day and do 3-4 times every day.
The interaction between helper T cells and B cell. sequentially involves antigen presentation by B cells to differentiated T cells, activation of helper T cells and. expression of membrane and secreted molecules by the helper T cells that bind to and activate the B cells.
These T-cell clones will activate B cells to produce the antibodies that will ultimately destroy the invading microbe. Summary of the action in Part 6: 1  IL-2 protein binds to receptors on the surface of the T cell. 2  The T cell proliferates.