# Retrovirus

Pyanodons item · internal name `retrovirus` · stack size 100 · first craftable in tier 1 (pY science pack 1, [tier 1](https://factorio.kalzumeus.com/tier/1.md))
HTML page: https://factorio.kalzumeus.com/item/retrovirus/

## Produced by (3 recipes)

### Retrovirus (`retrovirus`)

- 5 s · tier 1 · productivity modules allowed
- Ingredients: 4 × [Vrauk cocoon](https://factorio.kalzumeus.com/item/cocoon.md), 1 × [Steel plate](https://factorio.kalzumeus.com/item/steel-plate.md), 1 × [Petri dish](https://factorio.kalzumeus.com/item/petri-dish.md), 1 × [Glassware](https://factorio.kalzumeus.com/item/flask.md), 1 × [Laboratory instrument](https://factorio.kalzumeus.com/item/lab-instrument.md), 50 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md)
- Results: 1 × [Retrovirus](https://factorio.kalzumeus.com/item/retrovirus.md)
- Made in: Incubator MK 01, Incubator MK 02, Incubator MK 03, Incubator MK 04
- Unlocked by: [Genetics - Stage 2](https://factorio.kalzumeus.com/tech/genetics-mk02.md)

### Retrovirus (`retrovirus-2`)

- 5 s · tier 2 · productivity modules allowed
- Ingredients: 4 × [Vrauk cocoon](https://factorio.kalzumeus.com/item/cocoon.md), 1 × [Steel plate](https://factorio.kalzumeus.com/item/steel-plate.md), 1 × [Petri dish](https://factorio.kalzumeus.com/item/petri-dish.md), 1 × [Glassware](https://factorio.kalzumeus.com/item/flask.md), 1 × [Laboratory instrument](https://factorio.kalzumeus.com/item/lab-instrument.md), 20 × [Liquid nitrogen](https://factorio.kalzumeus.com/fluid/liquid-nitrogen.md)
- Results: 3 × [Retrovirus](https://factorio.kalzumeus.com/item/retrovirus.md)
- Made in: Incubator MK 01, Incubator MK 02, Incubator MK 03, Incubator MK 04
- Unlocked by: [Genetics - Stage 3](https://factorio.kalzumeus.com/tech/genetics-mk03.md)

### Retrovirus (`cheap-retrovirus`)

- 5 s · tier ? · productivity modules allowed
- Ingredients: 1 × [Retrovirus](https://factorio.kalzumeus.com/item/retrovirus.md), 2 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md), 30 × [Hot air](https://factorio.kalzumeus.com/fluid/hot-air.md)
- Results: 2 × [Retrovirus](https://factorio.kalzumeus.com/item/retrovirus.md)
- Made in: Incubator MK 01, Incubator MK 02, Incubator MK 03, Incubator MK 04
- Unlocked by an upgrade choice (script), not research

## Used in (23 recipes)

- cDNA (`cdna`, tier 1) → [cDNA](https://factorio.kalzumeus.com/item/cdna.md)
- DNA polymerase (`dna-polymerase`, tier 2) → [DNA polymerase](https://factorio.kalzumeus.com/item/dna-polymerase.md)
- Pluripotent stem cells (`psc`, tier 4) → [Pluripotent stem cells](https://factorio.kalzumeus.com/fluid/psc.md)
- Chimeric proteins (`chimeric-proteins`, tier 5) → [Chimeric proteins](https://factorio.kalzumeus.com/item/chimeric-proteins.md)
- DNA polymerase (`dna-polymerase-2`, tier 5) → [DNA polymerase](https://factorio.kalzumeus.com/item/dna-polymerase.md)
- Dingrido (`dingrido`, tier 5) → [Dingrido](https://factorio.kalzumeus.com/item/dingrido.md)
- Mutagenic infusion (`ulric-infusion`, tier 5) → [Mutagenic infusion](https://factorio.kalzumeus.com/item/ulric-infusion.md)
- Alien enzymes (`alien-enzymes`, tier 6) → [Alien enzymes](https://factorio.kalzumeus.com/item/alien-enzymes.md)
- Grow kicalk gen 3 (`kicalk-mk03-breeder`, tier 6) → [Kicalk MK 03](https://factorio.kalzumeus.com/item/kicalk-mk03.md)
- Moondrop MK 03 (`moondrop-mk03-breeder`, tier 6) → [Moondrop MK 03](https://factorio.kalzumeus.com/item/moondrop-mk03.md)
- Non conductive phazogen (`cottongut-science-py-seeds`, tier 6) → [Non conductive phazogen](https://factorio.kalzumeus.com/item/nonconductive-phazogen.md)
- Polyketide synthase enzymes (PKSs) (`enzyme-pks`, tier 6) → [Polyketide synthase enzymes (PKSs)](https://factorio.kalzumeus.com/item/enzyme-pks.md)
- Zymogens (`zymogens`, tier 6) → [Zymogens](https://factorio.kalzumeus.com/item/zymogens.md)
- Gene transfer agent (GTA) (`gta`, tier 7) → [Gene transfer agent (GTA)](https://factorio.kalzumeus.com/fluid/gta.md)
- Pluripotent stem cells (`psc-cbp`, tier 7) → [Pluripotent stem cells](https://factorio.kalzumeus.com/fluid/psc.md)
- Pluripotent stem cells (`psc-mutant`, tier 7) → [Pluripotent stem cells](https://factorio.kalzumeus.com/fluid/psc.md)
- Grow kicalk gen 4 (`kicalk-mk04-breeder`, tier 8) → [Kicalk MK 04](https://factorio.kalzumeus.com/item/kicalk-mk04.md)
- Moondrop MK 04 (`moondrop-mk04-breeder`, tier 8) → [Moondrop MK 04](https://factorio.kalzumeus.com/item/moondrop-mk04.md)
- Pluripotent stem cells (`psc-gh`, tier 8) → [Pluripotent stem cells](https://factorio.kalzumeus.com/fluid/psc.md)
- Dingrido (`dingrido-earth-sample-turd`, tier ?) → [Dingrido](https://factorio.kalzumeus.com/item/dingrido.md)
- Non conductive phazogen (`cottongut-science-py-seeds-80-20`, tier ?) → [Non conductive phazogen](https://factorio.kalzumeus.com/item/nonconductive-phazogen.md)
- Polyketide synthase enzymes (PKSs) (`enzyme-pks-nickel-carbonyl`, tier ?) → [Polyketide synthase enzymes (PKSs)](https://factorio.kalzumeus.com/item/enzyme-pks.md)
- Retrovirus (`cheap-retrovirus`, tier ?) → [Retrovirus](https://factorio.kalzumeus.com/item/retrovirus.md)