| 1 | But in 2D cell cultures, such gradients aren't present. | |
| 2 | She rechecked the components of the culture media to confirm there were no phosphorus contaminants. | |
| 3 | Antibodies to the virus can be detected, and the virus can be isolated in cell culture. | |
| 4 | The most important of these is to get the algae to secrete their products into the culture medium in which they are being raised. | |
| 5 | Cultures were then refrigerated for seven days, after which protozoa were still detected in half of the samples. |