Most companies have subsidiaries.
ETNI was ENTB-Change of name, probably means moving away from Stem Cell-NR2F6.
Zander is strictly a Veterinary NR2F6 Program (Cancers & Auto Immunes for Cats and Dogs, & EIPH Treatments and Therapies for Horses.
Zander is currently still a subsidiary of ETNI, they are spinning off, will have their own ticker, Zander recently paid a dividend in shares of Zander to all ETNI shareholders.
Tere are things going on behing the scenes so to speak. That's all I can say for now, they're both in a Quiet Period