# Animal numbers in connectivity map

**URL:** https://community.brain-map.org/t/animal-numbers-in-connectivity-map/3093
**Category:** Science
**Created:** [February 20, 2024, 2:27pm UTC](https://community.brain-map.org/t/animal-numbers-in-connectivity-map/3093 "2024-02-20T14:27:57Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![R91](https://avatars.discourse-cdn.com/v4/letter/r/54ee81/32.png) [@R91](https://community.brain-map.org/u/R91)
#### Post date: [February 20, 2024, 2:27pm UTC](https://community.brain-map.org/t/animal-numbers-in-connectivity-map/3093/1 "2024-02-20T14:27:57Z")

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Hi,  
The Oh et al. (2014) Nature paper reported Phase 1 (469) brains in the experimental procedure. I was wondering how many brains were used in Phase 2 and what is the reference for this? I am specifically looking at Hcrt-Cre with eGFP labelled projects. Is it 1 mouse brain?  
Thank you,  
Roksana