#' Ligand-receptor interactions in CellChat database for mouse #' #' The ligand-receptor interaction database curated in CellChat tool #' #' @format A list includes the ligand-receptor interactions #' @source \url{https://github.com/sqjin/CellChat/} "CellChatDB.mouse" #' Ligand-receptor interactions in CellChat database for human #' #' The ligand-receptor interaction database curated in CellChat tool #' #' @format A list includes the ligand-receptor interactions #' @source \url{https://github.com/sqjin/CellChat/} "CellChatDB.human" #' Mouse Protein-Protein interactions #' #' An adjacency matrix of the high confidence known experimental interactions #' between mouse proteins on STRINGdb. #' #' @format A square matrix where A_{ij}=1 if protein i interacts with protein j #' @source \url{http://www.string-db.org/} "PPI.mouse" #' Ligand-receptor interactions in CellChat database for Zebrafish #' #' The ligand-receptor interaction database curated in CellChat tool #' #' @format A list includes the ligand-receptor interactions #' @source \url{https://github.com/sqjin/CellChat/} "CellChatDB.zebrafish" #' Human Protein-Protein interactions #' #' An adjacency matrix of the high confidence known experimental interactions #' between human proteins on STRINGdb. #' #' @format A square matrix where A_{ij}=1 if protein i interacts with protein j #' @source \url{http://www.string-db.org/} "PPI.human"