Last Updated：2025/11/20
(anatomy, immunology) The system that differentiates self from non-self and protects the body from foreign substances and pathogenic organisms by producing an immune response. It includes organs such as the thymus, the spleen and lymph nodes; tissue such as bone marrow, and lymphoid tissues such as the tonsils; cells such as lymphocytes including the B cells and T cells, and cell products such as antibodies.
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immune system
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Source Word
immune system
Noun
(anatomy,
immunology)
The
system
that
differentiates
self
from
non-self
and
protects
the
body
from
foreign
substances
and
pathogenic
organisms
by
producing
an
immune
response.
It
includes
organs
such
as
the
thymus,
the
spleen
and
lymph
nodes;
tissue
such
as
bone
marrow,
and
lymphoid
tissues
such
as
the
tonsils;
cells
such
as
lymphocytes
including
the
B
cells
and
T
cells,
and
cell
products
such
as
antibodies.
Japanese Meaning
免疫系。自己と非自己を区別し、免疫反応を通じて体を外来の物質や病原体から保護するシステム。胸腺、脾臓、リンパ節などの器官、骨髄や扁桃などの組織、そしてB細胞やT細胞などのリンパ球、抗体などの細胞産物から構成される。
Sense（1）
(anatomy,
immunology)
The
system
that
differentiates
self
from
non-self
and
protects
the
body
from
foreign
substances
and
pathogenic
organisms
by
producing
an
immune
response.
It
includes
organs
such
as
the
thymus,
the
spleen
and
lymph
nodes;
tissue
such
as
bone
marrow,
and
lymphoid
tissues
such
as
the
tonsils;
cells
such
as
lymphocytes
including
the
B
cells
and
T
cells,
and
cell
products
such
as
antibodies.
（ plural ）
