Directions:   At 513 Parnassus Avenue, enter the main doors and proceed down the hall past the first elevator bay, where you'll see large semicircular staircase. Take these up the 2nd floor, and turn right to continue walking away from the Parnassus Avenue entrance. Continue to the very end of this hallway, where you will enter Health Sciences East (HSE) and see signs for the Sandler Asthma Basic Research Center (SABRE). Enter the SABRE center, and loop around the hallway to the right to see a suite of offices (including Dr. Kotas's office, HSE 207) and the entrance to the lab (HSE 201), where you can ring the doorbell to gain entry.