geez, this appears to be a complex issue, and timely. i was just loading up on probiotics because of my stomach troubles.... so you are saying that most are ALU based and should be avoided, and the good one are
• Bifidobacterium breve ss. Breve
• Bifidobacterium infantis ss. Infantis
• Bifidobacterium longum
i see you were looking for sources of these, i think custom probiotics sells them without any other strains mixed in.