Initial claim: anthropocentrism that only humans are worth of moral consideration
Objection: Humans have moral value so the bodily part made of cells should also have value. Every living organism has cell composition, so other species should also have moral values
2. Problem: not all bodily part have equal value, brain and heart is more important than other organs
3. Clarification: argue value lies on body parts or more on the whole?
4. Improvement: extreme words such as equal can be easily attacked by opponents