Microscopy image baseline
Mon, Nov 16, 2026 · Week 13 · Genetics of Disease (Medical Interventions)
Today's goal: Use cell and tissue images to establish a baseline for normal versus abnormal morphology and a diagnostic workflow.
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Practice pair, not your slides: two images of the same organ, one normal and one from a tumor.
Morphology comparison (benign vs. malignant), from what I saw in the practice pair:
- Cell size and shape: in the normal panel the nuclei are about the same size and round; in the tumor panel the nuclei vary about three-fold in size, some are angular, and two cells carry more than one nucleus (pleomorphism).
- Tissue arrangement: the normal panel keeps its layered architecture, cells lined up along a boundary; the tumor panel is clumps with no consistent orientation, the layering lost.
- Boundaries: the normal panel's tissue stops at a clean edge; in the tumor panel a finger of cells crosses that edge into the neighboring tissue (invasion).
Metastasis (one line): the practice metastasis image shows a clump of the tumor's cells sitting inside a distant organ's tissue, so cells left the original site through blood or lymph instead of staying put.
Diagnostic workflow (three steps):
1. Take a tissue sample (biopsy) and prepare it on a slide.
2. Examine the cells under the microscope for size, shape, arrangement and the tissue edge.
3. Classify the tumor as normal, benign, or malignant, and note any sign of invasion or spread.
How to use this: your images will not match these words. Write what you see in your own panels, the feature named and the observation beside it.
| Feature | Benign tissue | Malignant tissue |
|---|---|---|
| Cell size and shape | Uniform, alike | Pleomorphic, varied |
| Arrangement | Orderly architecture | Disorganized |
| Boundary | Stays local, clear edge | Invades surrounding tissue |
This model shows the level of evidence and organization needed to complete: Completes the cancer-launch baseline task: a two-column comparison of benign versus malignant tissue morphology, a one-line metastasis explanation, and a three-step diagnostic workflow sketch.
- State the question and method.
- Present the observations and data with units.
- Explain the result, limitations, and next investigation.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your morphology comparison and workflow sketch in Schoology before end of block.
Turn in: Two-column morphology comparison (benign vs. malignant), one-line metastasis explanation, and a three-step diagnostic workflow sketch.
Go to Schoology to turn this in.
Submit one PDF. Schoology attaches your name to your upload; on the page itself, write your period and code. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Claim ceiling: Today's evidence supports a classroom claim about microscopy image baseline. It cannot prove causation, diagnose a real patient, or justify action outside this room.
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.
It builds this reusable test skill: Reading cell and tissue morphology to tell normal from malignant.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.