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Petri Dish With Cells

Name: SciFig
Author: SciFig

A clean, editable petri dish with cells for microbiology figures, posters, and slides — ready to relabel and export in any format.

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Core Subject (e.g., Cas9 protein cutting DNA)

Action / Details (e.g., Double strand break, detailed molecular view)

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6 input modes · 6 publication stylesEvery text editable · Multimodal enhanceEditable PPTX · Layered SVG · 8K PNG / JPG

What is Petri Dish With Cells?

A petri dish with cells is a common microbiology icon used to show cultured cells, bacterial colonies, or growth media in a shallow, lidded dish. It appears in lab protocols, graphical abstracts, and teaching figures whenever a culture step needs a clear visual. With SciFig you describe the dish you need in plain language and generate a clean, editable petri dish — top view or angled, empty or seeded — ready to relabel and export.

Why figures use a drawn culture plate instead of a photo

A photograph of a plate carries lens glare, condensation, and background clutter that survives neither greyscale conversion nor a 40 mm single-column figure; a vector drawing stays legible at any reduction.
The dish is a standardised visual token: readers parse a shallow circle with a rim as "culture step" instantly, which lets a workflow schematic skip explanatory text.
Drawing the plate lets you show a state that no camera captured — a seeding density, a colony count, or a treatment condition that exists only as an experimental design.
Consistent geometry across panels matters: if panel A shows a 10 cm dish and panel B shows a 35 mm dish, the drawing must encode that difference rather than leave it to the caption.
Journals increasingly require that schematic elements be distinguishable from data; a stylised plate signals "illustration", not "result", and avoids the image-integrity flags a decorative micrograph attracts.

What to draw and label on the plate

Lid and base as separate strokes: the lid is slightly larger in diameter and overhangs the base, and a small offset between them is what makes a top view read as a lidded vessel rather than a flat disc.
The agar or medium layer — a filled band inset from the wall, drawn with a visible meniscus in side view. Its depth (typically ~4 mm for a 10 cm plate) distinguishes an agar plate from a liquid culture dish.
The biological content itself, and it must match the claim: discrete circular colonies for a bacterial streak or spread plate; a confluent or subconfluent monolayer stipple for adherent mammalian cells; a lawn for a phage plaque assay.
Choose one viewpoint and stay with it. A true top view (concentric circles) is best for colony counting and CFU panels; a 20–30° angled or side view is better when you need to show medium depth, a lid being lifted, or liquid handling.
Optional annotations that carry information: quadrant streak lines, a grid for counting, a plate label or barcode strip, and a scale cue such as the plate diameter (35 / 60 / 100 mm).
Keep the colony marks irregular in placement — evenly spaced dots on a grid read as decoration and mislead readers about plating density.

Where the drawn dish appears

Method schematics for isolation and culture: sample → enrichment broth → streak → single-colony pick, with each plate showing the appropriate colony morphology.
Antimicrobial and susceptibility figures: disc diffusion plates with zones of inhibition, MIC agar dilution series, or checkerboard assay layouts.
Cell-culture workflow panels in graphical abstracts — passage, seeding, transfection, and treatment timelines where the dish anchors each time point.
Teaching slides and SOP documents for aseptic technique, where the lid position (on, ajar, off) is itself the instructional content.
Screening and phenotype figures: colony PCR pipelines, blue/white selection, yeast spot dilution assays, and CFU quantification panels.