Modifiers matching gland:

• secretory,
• specialized,
• real,
• animal,
• endocrine,
• individual,
• special,
• adult,
• digestive,
• reproductive,
• major,
• internal,
• ductless,
• vital,
• larger,
• neuroendocrine,

Simple categories matching secretory:

• fluid,
• system,
• unit,
• tissue,
• structure,
• cell,
• organelle,
• gland,
• cavity,
• component,
• organs,
• protein,
• enzyme,
• compartment,