Answer:
I would say CdKs and cyclins the reason why I am not saying this with some ambiguity is because these all technically effect/regulate the cell cycle.
Langerhans cells are dendritic cells (antigen-presenting immune cells) of the skin, and contain organelles called Birbeck granules. They are present in all layers of the epidermis and are most prominent in the stratum spinosum.
Is there any choices ? if not i’m going to say SILENT ! hope this helped ! have a great day !
Answer:
a. in the bottom of the atrium just above the ventricles
Explanation:
AV node -
It helps to control the heart rate , it serves as an electrical relay station , reduces the electrical current which is sent by the SA node .
The location of the AV node , is at the lower back section of the inter atrial septum , and conducts the electrical impulse normally from the atria to ventricles .

I believe the answer is...
Taking medicine in a pill form.
Hopefully, this helps you!!
