Complex sentence: Collectins SP-A and SP-D have anti-allergic effects: they inhibit IgE binding to allergens, decrease histamine release from basophils, and inhibit T-lymphocyte production in the late phase of the inflammation.
Split into simpler sentences: Collectins SP-A and SP-D have anti-allergic effect. They inhibit IgE binding to allergen, decrease histamin release from basophils and inhibit T-lymphocyte production in the late phase of the inflammation.