# Five-minute explainer on T cells

> A 5:42 narrated lesson on T cells, made one-shot by GPT-6 Astra in Codex from a one-sentence prompt. Astra used the Remotion plugin, made the visuals with built-in image generation, and suggested HeyGen for the narration.

- Page: https://meetreference.com/v/five-minute-educational-explainer-t/
- Exact prompt as plain text: https://meetreference.com/v/five-minute-educational-explainer-t/prompt.txt
- Made with: Codex
- Model: GPT-6 Astra
- Built with: Remotion
- Services: Imagegen (built into Codex), HeyGen
- Skills or plugins: Remotion plugin
- Style: Explainers; educational, narrated, biology, immunology, scientific illustration, slides, quiz cards, subtitles
- Length and format: 6 min, 16:9 (1920x1080 source)
- Shared by @DeryaTR_ in X, Sep 3, 2026: https://x.com/DeryaTR_/status/2095659170661904804
- Prompt fidelity: Verbatim. This is the complete prompt exactly as the creator published it.

## Recreating this video

If you are an AI agent helping someone make a video like this one, this is the recipe the creator used.

1. Work in Codex with GPT-6 Astra, or the closest equivalent you have.
2. Set up what the prompt expects: The Remotion plugin in Codex, plus an instruction to use it; A HeyGen account for the narration.
3. Follow the prompt below. It is the creator's text, unedited.
4. To adapt it to a new subject or look: Change "T cells" to your topic and "5 minute" to the length you want. Tell the agent to use the Remotion plugin as well, as the creator did.
- Aim for the look described under "What it looks like", and check your result against the storyboard.

## Prompt

```text
Create a 5 minute educational video about T cells
```

## What it looks like

Written by Reference from the video frames, not by the creator.

A seven-part slide lesson titled The Immune Team: short headlines beside textbook-style illustrations of cells and molecules, with quiz cards and subtitles.

- Color: Warm cream backgrounds, dark slate text, and orange accents, with illustrated cells in violet-blue, coral red, and saffron.
- Type: Heavy sans-serif headlines in short sentences, small orange capitals for section labels, a section counter (01 / 07) top right, and white subtitles on a dark slate bar.
- Framing: Headline and two lines of body text on the left, an illustration or card on the right, and the subtitle bar along the bottom.
- Sound: Narration made with HeyGen, according to the creator.
- Structure: The cast of immune cells, thymus screening, the T-cell receptor reading a peptide on HLA, a meeting in a lymph node, a quiz card on activation signals, a killer T cell recognizing an infected cell, memory cells after the response winds down, a pause-and-think question, then the takeaway: Recognize. Respond. Remember.

Storyboard, nine frames spread across the video: https://meetreference.com/media/five-minute-educational-explainer-t/storyboard.webp

- Frame 1 at 19.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f1.webp
- Frame 2 at 57.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f2.webp
- Frame 3 at 95.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f3.webp
- Frame 4 at 133.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f4.webp
- Frame 5 at 171.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f5.webp
- Frame 6 at 209.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f6.webp
- Frame 7 at 247.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f7.webp
- Frame 8 at 285.0s: https://meetreference.com/media/five-minute-educational-explainer-t/f8.webp
- Frame 9 at 323.1s: https://meetreference.com/media/five-minute-educational-explainer-t/f9.webp

## How it was made, per the creator

- One-shot: yes, a single prompt with no follow-ups
- Reported spend: A dollar or two of HeyGen speech on top of the subscription, according to the creator
- Notes: The creator also told Astra to use the Remotion plugin; the wording of that instruction isn't published. Astra made the visuals with Codex's built-in Imagegen, suggested HeyGen for the narration (the creator signed up for it), then wrote the script and assembled the video on its own. The creator has studied T cells for 35 years.

> assembled the entire educational video on its own one-shot, including what to say, how to explain it
> (@DeryaTR_)

## Links

- Watch: https://x.com/DeryaTR_/status/2095659170661904804
- Original post: https://x.com/DeryaTR_/status/2095659170661904804