obsolete negative regulation of formation of structure involved in a symbiotic process (obsolete GO:0044147)
OBSOLETE. Any process that stops, prevents, or reduces the frequency, rate or extent of the progression of an organism from an initial condition to a later condition, occurring in, on or near the exterior of its host organism.
negative regulation of development of symbiont during interaction with host
related
negative regulation of development of symbiont involved in interaction with host
related