Abdominal Exploration and Biopsy

1: When you complete an abdominal exploration for a suspected foreign body presented with vomiting and you did not find anything abnormal in the abdomen you should?

2: When you take a liver biopsy, how many pieces should you submit and what for?

3: When should you take biopsies for culture from liver and pancreas?

4: What are the locations should you take biopsies of the intestines from?

5: What layer of kidney should the biopsy be taken from?