lymphocyte
Let an agent explain lymphocytes and their main kinds, relay reference ranges and the meaning of subsets from clinical and immunology references in general terms, and route personal test results and diagnoses to clinicians.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain lymphocytes and their main kinds, relay reference ranges and the meaning of subsets from clinical and immunology references in general terms, and route personal test results and diagnoses to clinicians.
A type of white blood cell of the adaptive and innate immune systems, including T cells, B cells and natural killer cells, produced in the bone marrow and maturing in the marrow or thymus; lymphocytes recognise antigens, kill infected or abnormal cells, produce antibodies and form immune memory, and their counts and subsets are measured in clinical tests.
What it is for: Adaptive immunity, immune memory and defence against infection and tumours.
It can be explain the kinds and their functions; explain development and activation; relay reference ranges in general terms; route personal results to clinicians.
Distinguishing features
Antigen-specific receptors on T and B cells
Immune memory
Subsets defined by markers and function
Circulate between blood, lymph and tissues
What it looks like
Not visible to the eye; under the microscope a small round cell with a large nucleus and little cytoplasm.
Physical character
diameter: about 7-15 micrometres
share of white blood cells: about 20-40 percent - adults; higher in children
How it is recognised
Small round white cell with a large nucleus
Subsets identified by surface markers such as CD3, CD4, CD8, CD19 and CD56
Neutrophils and monocytes are other white cells
Related models
is a kind of - an agranulocyte
includes - a major kind
is produced in - origin
is part of - the system
In practice
Families and kinds
T cells including helper, cytotoxic, regulatory and memory subsets
B cells and plasma cells
natural killer cells
innate lymphoid cells
tissue-resident memory cells
Identifiers
Cell Ontology CL:0000542 lymphocyte
surface markers CD nomenclature subset identification
Standards and regulation
Laboratory reference ranges and haematology standards
Cell ontology and CD nomenclature
Clinical guidelines that use lymphocyte counts
Failure modes and hazards
Low counts in immunodeficiency and after treatments
Malignancies such as lymphoma and leukaemia
Misinterpretation of counts without context
Agents giving personal medical advice
Also called
+342
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Kinds What lymphocytes are.
Biology.
Types
Kinds and markers.
Types
Types.
- What kinds of lymphocyte exist, and how are they identified by markers? definition
- Is the user asking about their own test results, which needs a clinician? boundary
Development
Development.
Development
Development.
- How do lymphocytes develop and mature in the marrow and thymus? definition
- Which entry fits a specific kind? action
Function Immune roles.
Physiology.
Recognition
Antigen recognition.
Recognition
Recognition.
- How do T and B cells recognise antigens, and how are they activated? definition
- Which entry fits the adaptive immune system? action
Memory
Memory and effector functions.
Memory
Memory.
- How do lymphocytes kill cells, produce antibodies and form memory? provenance
- Which references are standard? provenance
Clinical Counts and disease.
General terms only.
Counts
Counts and subsets.
Counts
Counts.
- What do lymphocyte counts and subset tests measure, and what are typical reference ranges? measurement
- Is the presentation free of personal interpretation of results? boundary
Disease
Disorders.
Disease
Disease.
- Which conditions involve lymphocytes, in general terms? provenance
- Which entry fits lymphoma or immunodeficiency? action
Study Research and teaching.
Study.
Research
Research and therapy.
Research
Research.
- How are lymphocytes used in research and therapies such as CAR T cells, in general terms? provenance
- Which entry fits immunotherapy? action
Teach
Teaching.
Teach
Teaching.
- How are lymphocytes taught in immunology, and which misconceptions arise? provenance
- Which entry fits immunology? action
What the second pass must settle
- Should each lymphocyte kind be a separate entry?
- How should reference ranges be linked by laboratory?
- The registry entry has merged aliases for narrow subsets; should they be split off?