development of symbiont in host
development of symbiont in host intercellular space
narrow
development of symbiont in host vascular tissue
narrow
The progression of an organism from an initial condition to a later condition, occurring within the cells or tissues of the host organism. This may (but not necessarily) include a filamentous growth form, and also can include secretion of proteases and lipases to break down host tissue. The host is defined as the larger of the organisms involved in a symbiotic interaction.
GO:0044111
formation of structure involved in a symbiotic process
is_a