This contrasts with the cell walls of fungi (which are made of chitin), and of bacteria, which are made of peptidoglycan. Cell walls perform many essential functions: they provide shape to form the tissue and organs of the plant, and play an important role in intercellular communication and plant-microbe interactions.
Chris and Taya Kyle met in 2001 and married just before he deployed for the first time at the start of the Iraq war, according to the book. Chris Kyle would deploy three more times to Iraq before retiring in 2009.
Coincidentally, the actress is due to give birth in January 2008. Courtney Thorne-Smith, who plays Cheryl on According to Jim, has been married twice. Her first marriage to Dr. Andrew Conrad lasted for only seven months, after which she started seeing cardiologist Robert Andrews.