Examlex
Several effector T cell functions are mediated by cell surface molecules on the effector cell interacting with binding partners on the target cells. In the case of the CD40-CD40 ligand interaction, effector CD4 T cells express CD40 ligand, which binds to CD40 target cells. Individuals with a genetic deficiency in CD40 ligand expression show greatly reduced antibody responses, particularly to protein antigens which require CD4 TFH cell interactions with B cells. Another expected defect in these individuals would be:
Four-Chambered Heart
An anatomical feature of the heart, consisting of two atria and two ventricles, which efficiently separates oxygenated and deoxygenated blood, seen in mammals and birds.
Mammary Glands
Specialized organs in mammals that produce milk to nourish newborn offspring, present in both sexes but usually functional only in females.
Chimpanzees
A species of great ape native to the forests and savannahs of Africa, known for their complex social structures and behaviors.
Weapons
Tools or instruments designed or used for inflicting bodily harm or physical damage upon an adversary.
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