What are the differences between T cells and B cells?

Question

Accepted Answer

Basis of differentiation

T cells

B cells

Origin

Bone marrow

Location of maturation stage

Thymus

Bone marrow

Also known as

T lymphocytes

B lymphocytes

Located

Inside lymph node

Outside lymph node

Membrane receptor for antigen

TCR (T cell receptor)

BCR (B cell receptor)

Surface antibodies

Absent

Present

Secrete

Lymphokines

Antibodies

Life span

Long

Short

Connect

Connect to the virus antigen on the outside

Connect only to the surface of invading bacteria and virus

Types

Two types – Cytotoxic T cells & helper T cells

Only one active type

Basis of differentiation	T cells	B cells
Origin	Bone marrow	Bone marrow
Location of maturation stage	Thymus	Bone marrow
Also known as	T lymphocytes	B lymphocytes
Located	Inside lymph node	Outside lymph node
Membrane receptor for antigen	TCR (T cell receptor)	BCR (B cell receptor)
Surface antibodies	Absent	Present
Secrete	Lymphokines	Antibodies
Life span	Long	Short
Connect	Connect to the virus antigen on the outside	Connect only to the surface of invading bacteria and virus
Types	Two types – Cytotoxic T cells & helper T cells	Only one active type