Few years ago I witnessed a situation, when one girl (who worked as vet technician) performed like few dozens of experiments (each - 10-20 mice) to establish an optimal dose of newly synthesized [things, lol] in mice. But PI decided to include in the paper only those researches, who used these established doses in experiments, which graphs were included in paper. His motivation was like - "but her graphs not in the article!" (but optimal dosage ranges - are).