Peptides are tiny messenger molecules that help cells communicate by binding to...
https://speedy-wiki.win/index.php/What_Does_%E2%80%98Downstream%E2%80%99_Mean_in_a_Signaling_Pathway%3F
Peptides are tiny messenger molecules that help cells communicate by binding to specific receptors. Scientists study these interactions to understand how signals pass inside cells, often measuring changes like cyclic AMP levels or calcium inside cells