UTEX algal cultures are living organisms whose availability can change from week to week. Cultures are removed from the online catalog if they are not considered healthy or if they are being cleaned of contamination. Recovering a culture, or bringing a culture back to health again, is labor intensive. It can take anywhere from 4 weeks to a few months before an organism is successfully recovered.
You can request to be placed on a notification list for any particular UTEX strain that is not currently available for ordering. When the strain is recovered, UTEX will send an email notifying you of the update.