# Improved caged xeno: recombinant erythropoietin

Pyanodons item · internal name `sulfuric-caged-xeno` · stack size 100 · first craftable in tier 7 (Production science pack, [tier 7](https://factorio.kalzumeus.com/tier/7.md))
HTML page: https://factorio.kalzumeus.com/item/sulfuric-caged-xeno/

## Produced by (2 recipes)

### Improved caged xeno: recombinant erythropoietin (`xeno-improved-7`)

- 80 s · tier 7 · productivity modules allowed
- Ingredients: 1 × [Caged xeno](https://factorio.kalzumeus.com/item/caged-xeno.md), 1 × [Recombinant erythropoietin](https://factorio.kalzumeus.com/item/recombinant-ery.md), 1 × [Antivirals](https://factorio.kalzumeus.com/item/antiviral.md)
- Results: 1 × [Improved caged xeno: recombinant erythropoietin](https://factorio.kalzumeus.com/item/sulfuric-caged-xeno.md)
- Made in: Xeno pen MK 01, Xeno pen MK 02, Xeno pen MK 03, Xeno pen MK 04
- Unlocked by: [Erythropoietin stimulating agents](https://factorio.kalzumeus.com/tech/recombinant-ery.md)

### Improved caged xeno: recombinant erythropoietin (`xeno-improved-8`)

- 30 s · tier 7 · productivity modules allowed
- Ingredients: 1 × [Caged xeno](https://factorio.kalzumeus.com/item/caged-xeno.md), 1 × [Recombinant erythropoietin](https://factorio.kalzumeus.com/item/recombinant-ery.md), 1 × [Antivirals](https://factorio.kalzumeus.com/item/antiviral.md), 1 × [Growth factor](https://factorio.kalzumeus.com/item/gh.md)
- Results: 1 × [Improved caged xeno: recombinant erythropoietin](https://factorio.kalzumeus.com/item/sulfuric-caged-xeno.md)
- Made in: Xeno pen MK 01, Xeno pen MK 02, Xeno pen MK 03, Xeno pen MK 04
- Unlocked by: [Erythropoietin stimulating agents](https://factorio.kalzumeus.com/tech/recombinant-ery.md)

## Used in (2 recipes)

- Compost 1 × Improved caged xeno: recombinant erythropoietin (`biomass-sulfuric-caged-xeno`, tier 1) → [Biomass](https://factorio.kalzumeus.com/item/biomass.md)
- Extract blood from improved xeno (`ex-blo-xeno`, tier 7) → [Cage](https://factorio.kalzumeus.com/item/cage.md)