According to NASA's David S. McKay, it is only the fact that the following four items were found together in one location that suggests life was once present in the rock. They were found along fresh fractures and in pore spaces in the rock. It may be important to note that various supposed Precambrian microfossils on Earth have been disproven or brought into serious question. Also, the research team involved was divided on how these globules formed, whether at very high temperature or not. High temperature would make their proposition more unlikely.
Proponents hope that the globules can be explained by formation in water under lower temperatures.
Although carbonates are sometimes produced by living creatures, as in our oceans, they can also be formed when a lot of carbon dioxide is dissolved in water causing carbonates to precipitate out. The meteorite research team's rebuttal to this argument is that some of the carbonate spheres are cracked. They say most likely happened when the meteorite struck Earth. After further research, geophysicists in Hawaii published strong evidence that these carbonate globules are NOT fossils or the result of any biologic processes. Rather they crystalized from shock-melted materials.