Cardiorespiratory recovery from apneas requires dynamic responses of brainstem circuitry. One implicated component is the raphe system of Pet1-expressing (largely serotonergic) neurons. however their precise requirement neonatally for homeostasis is unclear. yet central toward understanding newborn cardiorespiratory control and dysfunction. https://www.markymarkscott.com/product-category/serioxyl-light-brown/