Which of the following is true of both b cells and t cells?

they produce antibodies that attack pathogens.

they are nonspecific body defense systems.

they interact with antigen-presenting cells.

they have receptors on their surface that bind to antigens.

Both B and T cells produce antibodies that attack pathogens

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: