Which of the following cells is NOT an antigen presenting cell? B-Cells

Dendritic cells

Macrophages

T-Cells

Which codon is the code for the amino acid histidine (his)?

Explain the significance of thesaurus geographicus

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees