[x dorsal to y iff x is further along the dorso-ventral axis than y, towards the back. A dorso-ventral axis is an axis that extends through an organism from back (e.g. spinal column) to front (e.g. belly)., x dorsal_to y iff x is further along the dorso-ventral axis than y, towards the back. A dorso-ventral axis is an axis that bisects an organism from back (e.g. spinal column) to front (e.g. belly).]
[Relation between an collecting structure and another structure, where the collecting structure acts as a conduit channeling fluid, substance or energy away from the other structure.]
[An administrative note intended for its editor. It may not be included in the publication version of the ontology, so it should contain nothing necessary for end users to understand the ontology.]
[Count of number of days intervening between the end of the stage and the time of fertilization according to a reference model. Note that the first day of development has the value of 1 for this property.]
[Count of number of months intervening between the end of the stage and the time of birth according to a reference model. Note that the first month of post-birth development has the value of 1 for this property, and the period during which the child is one month old has the value 2]
[Count of number of years intervening between the end of the stage and the time of birth according to a reference model. Note that the first year of post-birth development has the value of 1 for this property, and the period during which the child is one year old has the value 2]