In intestinal epithelial cells, the different plasma membrane domains are separated from each other by special barriers. Indicate true (T) and false (F) statements below regarding this separation. Your answer would be a four-letter string composed of letters T and F only, e.g. FFFF.
( ) These barriers are set up by nanoscale lipid raft domains.
( ) Proteins normally cannot pass through these barriers, whereas any membrane lipid can do so freely.
( ) The asymmetric distribution of membrane proteins resulting from these barriers is functionally important.
( ) These barriers are a result of proteins of the apical surface forming a large aggregate together that excludes proteins of the other domains.