Minutes to Burn

Juan slid off the ledge onto his feet. "He asked that we get off his family's mausoleum, that he can lay the flowers there for them."

He nodded an apology at the man and headed back toward the foot-bridge.

Chapter 13

Rex leaned over the hotel phone as Tank stretched out on the bed. He had to dial three times before the call went through. Donald picked up on the first ring. "How is it?"

"Lovely as always," Rex said. "Puts Paris to shame."

"Some interesting news. Remember that seawater that Frank sent back?"

"Of course." Rex pulled off his shirt and turned so that he could see his back in the mirror. He pressed his hand to the back of his neck, and the white imprint of his fingers lingered a few moments before fading.

"I finally got it under a microscope. The sample from Sangre de Dios was highly unusual. Most of the plankton were dead. Clumped together. Mostly unicellular phytoplankton-dinoflagellates were most prevalent, but a lot of them I didn't recognize."

"Really?" Rex said. "Species you didn't recognize?"

"My guess is that they were nonviable mutations. Remember, plank-ton are extraordinarily sensitive to UV-B."

"Yes," Rex said, pulling a Natural History magazine from his bag and perusing the back cover, "but they live at depths that screen out most radiation."

"Ah," Donald said. "But this was a surface sample. So my thought was, seismically motivated shifting currents pushed them upward, and their composition was altered by UV exposure. But the range of the mutations was staggering-they couldn't be based on radiation alone."

"So?" The phone line cut out. Rex looked over at his sat phone, still charging at the outlet, cursed, and dialed again. This time, the call went through on the first try.

"So," Donald said, picking up right where they'd left off. "I did a gas chromatography mass spec to check for DDT, but that came back negative, so I isolated some dinoflagellate DNA, and ran a gel."

Donald checked his watch. His linen shirt was creased and wrinkled across the front, dotted with sweat. He'd spent the entire morning in the lab. The work required a precision that had quickly become tedious. First, he'd centrifuged the water samples, placing them in a rapidly spinning test tube so that the denser dinoflagellates would settle at one end of the tube. Then, he'd made genomic preps to isolate the DNA strands, cut specific segments, and ran those segments through ethidium bromide-soaked agar to see how they'd settle. When they did, their banding patterns were visible under UV light, and ready to be compared to the control.

From past studies, Donald was familiar with the banding pattern of dinoflagellate DNA from around Galapagos; generally it banded from three to five kilobases down to ten base pairs. The DNA from the island of Santa Cruz matched this banding pattern. However, the sample from Sangre de Dios was irregular, with several of the DNA segments remaining at the top of the agar, barely traveling downward.

When Rex heard the results, he sat down on the bed. "Holy shit," he said. "What are you thinking?"

"Those segments are swollen with something to be moving that slow," Donald said. "I'm guessing a virus got ahold of them, finding its way through the UV-weakened cell walls and inserting its own DNA into their structures."

Rex whistled. "Well, viruses are phenomenally bountiful in H2O."

"That was my understanding. But this is well out of our field. I'd like you to take plenty of water samples on Sangre de Dios. In the meantime, I've sent the sample off to Everett at Fort Detrick."

"Samantha Everett?" Rex rubbed his forehead. "Are you sure that's such a good idea? I've heard she's a little… " The line cut out. "Unpre-dictable."

Former Chief of Viral Special Pathogens Branch at the Centers for Dis-ease Control in Atlanta and current Chief of the Disease Assessment Division at the U.S. Army Medical Research Institute of Infectious Dis-eases at Fort Detrick, Maryland, Samantha Everett was decked out in a blue full-body space suit, complete with neoprene gloves taped to her sleeves. The droning air circulation unit inside the space suit was mes-merizing, forming a low-pitched symphony with the other sounds of the Biosafety Level Four lab-the constant one-way airflow, the blowers sit-uated near the doors to ensure negative pressure, the HEPA filters working double-time overhead. To maintain her sanity, Samantha sang "Itsy Bitsy Spider" to herself, substituting her own lyrics where she forgot the words.