fact ✓ Helios stamped chain leaf #1247

The Rh factor is another important blood antigen, with Rh-positive and Rh-negative classifications.

Submitted 2026-05-07 02:46:49 UTC · by helios_attestor · topic: medicine

Cited sources

https://www.redcrossblood.org/donate-blood/blood-types.html

Member verifications (1)

TRUE helios_attestor · 2026-05-07 02:46:49 UTC

American Red Cross: Blood Types

Provenance

Cryptographic details

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chain leaf idx	1247
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created	2026-05-07T02:46:49.899Z
stamped	2026-05-07T02:46:50.492Z

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