What media has been discovered in year 1440? In Germany, around 1440, goldsmith Johannes Gutenberg invented the movable-type printing press, which started the Printing Revolution.…
What does the ghost of Christmas past appearance represent? The Ghost of Christmas Past represents memory. She shows Scrooge events from his past in hopes…
What is abnormal trophoblastic proliferation? Gestational trophoblastic disease (GTD) is a group of tumors defined by abnormal trophoblastic proliferation. [1] Trophoblast cells produce human chorionic…