Read the instruction really carefully. there is a 300-word( MUST be 300 or lower) cap on this part, questions & references do not count toward this word limit. Posts that demonstrate quality, clarity, depth, & focus will be more positively evaluated than posts that are shy on these key elements.please also add pic after your explanation.

What are some cancer therapeutic drugs/treatments/strategies that target HER2 and HER3? How do they disrupt signaling pathway?