Limitations on Epidemiologic Studies Include the Following

question 15

Multiple Choice

Limitations on epidemiologic studies include the following:
1. failure to control experimental group for other known carcinogens
2. insufficient observation periods which permit full demonstration of cancers with long latent periods
3. using improper control groups
4. deficient or incorrect health records

• A) 1 and 2 only
• B) 2 and 3 only
• C) 2 only
• D) 1, 2, 3 and 4

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Definitions:

Soil Fungi

Fungi that live in the soil, playing critical roles in nutrient cycling, organic matter decomposition, and as symbionts or pathogens of plants.

Hyphae

The long, branching filamentous structures of fungi, which collectively form the mycelium and are the primary mode of vegetative growth.

Hyphae

The long, thread-like structures that make up the body of fungi and some prokaryotic organisms.

Mycelia

A complex network of thread-like structures that form the vegetative part of fungi.