Closed:Subsetting dataset to create 2 seurat objects

Question

[planetearth]

I'm aligning two groups (old vs young) using this tutorial

The tutorial has the two groups in separate files (control & stim):

ctrl.data <- read.table(file = "../data/immune_control_expression_matrix.txt.gz", sep = "\t")
stim.data <- read.table(file = "../data/immune_stimulated_expression_matrix.txt.gz", sep = "\t")

then set up control object

ctrl <- CreateSeuratObject(counts = ctrl.data, project = "IMMUNE_CTRL", min.cells = 5)
stim <- CreateSeuratObject(counts = stim.data, project = "IMMUNE_STIM", min.cells = 5)

I have a matrix of gene counts (rows) and 3 cell types (columns) gathered from young and old mice.

How can I separate my dataset to create separate Seurat objects for young and old? An example column name is young_MPP_179.

Thanks!