If the recipient opens his WhatsApp Account while it's still blocked by you, then your message will never/ever be delivered to him even if you unblock him later on. Caution : Unblocking the recipient before he opens his Whatsapp account (or) before 30 days will deliver the message sent to the recipient.
Neurotransmitters. A Neuron is a specialized nerve cell that receives, processes, and transmits information to other cells in the body. We have a fixed number of neurons, which means they do not regenerate. Neuron is a specialized nerve cell that receives, processes, and transmits information to other cells in the body. We have a fixed number of neurons, which means they do not regenerate.
Your brain is made up of billions of nerve cells. They communicate by releasing chemical messengers called neurotransmitters. Each neurotransmitter is like a key that fits into a special lock, called a receptor, located on the surface of nerve cells. When a neurotransmitter finds its receptor, it activates the receptor's nerve cell.