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.
39) Which of the following are organs where activation of T and B cells usually occurs: A) bone marrow B) thymus C) lymph nodes D) lymph vessels E) all of the above Look here for the answer c.9) Which of the following cell types can be infected by HIV: A) B-cells B) T-helper cells C) macrophages D) glial cells E) all of the above Look here for the answer e. 50) Corticosteriods (such as prednisone) are commonly prescribed drugs for certain immune-related disorders.